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80525872 = 2471742293
BaseRepresentation
bin1001100110010…
…11101000110000
312121112010201201
410303023220300
5131103311442
611553540544
71665313210
oct463135060
9177463651
1080525872
1141500309
1222b74754
13138b585b
14a9a2240
1571097b7
hex4ccba30

80525872 has 40 divisors (see below), whose sum is σ = 188800416. Its totient is φ = 32480256.

The previous prime is 80525827. The next prime is 80525873. The reversal of 80525872 is 27852508.

It is a super-2 number, since 2×805258722 = 12968832122720768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (80525873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19243 + ... + 23050.

Almost surely, 280525872 is an apocalyptic number.

It is an amenable number.

80525872 is an abundant number, since it is smaller than the sum of its proper divisors (108274544).

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

80525872 is a wasteful number, since it uses less digits than its factorization.

80525872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42325 (or 42319 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 80525872 is about 8973.6208968287. The cubic root of 80525872 is about 431.8290075446.

It can be divided in two parts, 8052 and 5872, that added together give a square (13924 = 1182).

The spelling of 80525872 in words is "eighty million, five hundred twenty-five thousand, eight hundred seventy-two".

Divisors: 1 2 4 7 8 14 16 17 28 34 56 68 112 119 136 238 272 476 952 1904 42293 84586 169172 296051 338344 592102 676688 718981 1184204 1437962 2368408 2875924 4736816 5032867 5751848 10065734 11503696 20131468 40262936 80525872