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70472480 = 25513171993
BaseRepresentation
bin1000011001101…
…01001100100000
311220121101001212
410030311030200
5121020104410
610554245252
71514002061
oct414651440
9156541055
1070472480
1136864021
121b726828
13117a58c0
149506568
1562c0b05
hex4335320

70472480 has 96 divisors (see below), whose sum is σ = 189940464. Its totient is φ = 24477696.

The previous prime is 70472477. The next prime is 70472489. The reversal of 70472480 is 8427407.

It can be written as a sum of positive squares in 8 ways, for example, as 35378704 + 35093776 = 5948^2 + 5924^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (70472489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34364 + ... + 36356.

Almost surely, 270472480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70472480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94970232).

70472480 is an abundant number, since it is smaller than the sum of its proper divisors (119467984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70472480 is a wasteful number, since it uses less digits than its factorization.

70472480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038 (or 2030 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 70472480 is about 8394.7888597629. The cubic root of 70472480 is about 413.0537014869.

Adding to 70472480 its reverse (8427407), we get a palindrome (78899887).

The spelling of 70472480 in words is "seventy million, four hundred seventy-two thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 13 16 17 20 26 32 34 40 52 65 68 80 85 104 130 136 160 170 208 221 260 272 340 416 442 520 544 680 884 1040 1105 1360 1768 1993 2080 2210 2720 3536 3986 4420 7072 7972 8840 9965 15944 17680 19930 25909 31888 33881 35360 39860 51818 63776 67762 79720 103636 129545 135524 159440 169405 207272 259090 271048 318880 338810 414544 440453 518180 542096 677620 829088 880906 1036360 1084192 1355240 1761812 2072720 2202265 2710480 3523624 4145440 4404530 5420960 7047248 8809060 14094496 17618120 35236240 70472480