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70512470 = 2572151953
BaseRepresentation
bin1000011001111…
…10111101010110
311220200101220222
410030332331112
5121022344340
610555154342
71514226500
oct414767526
9156611828
1070512470
1136891076
121b7459b2
13117bab72
149516d70
1562cc8b5
hex433ef56

70512470 has 48 divisors (see below), whose sum is σ = 148778208. Its totient is φ = 23990400.

The previous prime is 70512469. The next prime is 70512473. The reversal of 70512470 is 7421507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70512473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73514 + ... + 74466.

It is an arithmetic number, because the mean of its divisors is an integer number (3099546).

Almost surely, 270512470 is an apocalyptic number.

70512470 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

70512470 is an abundant number, since it is smaller than the sum of its proper divisors (78265738).

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

70512470 is a wasteful number, since it uses less digits than its factorization.

70512470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125 (or 1118 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 70512470 is about 8397.1703567333. The cubic root of 70512470 is about 413.1318165851.

Adding to 70512470 its reverse (7421507), we get a palindrome (77933977).

The spelling of 70512470 in words is "seventy million, five hundred twelve thousand, four hundred seventy".

Divisors: 1 2 5 7 10 14 35 49 70 98 151 245 302 490 755 953 1057 1510 1906 2114 4765 5285 6671 7399 9530 10570 13342 14798 33355 36995 46697 66710 73990 93394 143903 233485 287806 466970 719515 1007321 1439030 2014642 5036605 7051247 10073210 14102494 35256235 70512470