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80232780 = 22358316111
BaseRepresentation
bin1001100100001…
…00000101001100
312120222020200110
410302010011030
5131014422110
611543400020
71662652545
oct462040514
9176866613
1080232780
1141320091
1222a53010
1313812324
14a9274cc
15709ca20
hex4c8414c

80232780 has 48 divisors (see below), whose sum is σ = 227372544. Its totient is φ = 21136320.

The previous prime is 80232727. The next prime is 80232791. The reversal of 80232780 is 8723208.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3076 + ... + 13035.

It is an arithmetic number, because the mean of its divisors is an integer number (4736928).

Almost surely, 280232780 is an apocalyptic number.

It is an amenable number.

80232780 is an abundant number, since it is smaller than the sum of its proper divisors (147139764).

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

80232780 is a wasteful number, since it uses less digits than its factorization.

80232780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16206 (or 16204 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 80232780 is about 8957.2752553441. The cubic root of 80232780 is about 431.3044577311.

Adding to 80232780 its reverse (8723208), we get a palindrome (88955988).

The spelling of 80232780 in words is "eighty million, two hundred thirty-two thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 83 166 249 332 415 498 830 996 1245 1660 2490 4980 16111 32222 48333 64444 80555 96666 161110 193332 241665 322220 483330 966660 1337213 2674426 4011639 5348852 6686065 8023278 13372130 16046556 20058195 26744260 40116390 80232780