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80660488 = 2353281677
BaseRepresentation
bin1001100111011…
…00100000001000
312121202222101111
410303230200020
5131122113423
612000500104
71666413526
oct463544010
9177688344
1080660488
1141592467
122301a634
1313931bcc
14a9d9316
15713460d
hex4cec808

80660488 has 32 divisors (see below), whose sum is σ = 154868760. Its totient is φ = 39370240.

The previous prime is 80660431. The next prime is 80660509. The reversal of 80660488 is 88406608.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 78464164 + 2196324 = 8858^2 + 1482^2 .

It is a super-2 number, since 2×806604882 = 13012228648796288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80660488.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118806 + ... + 119482.

Almost surely, 280660488 is an apocalyptic number.

It is an amenable number.

80660488 is a deficient number, since it is larger than the sum of its proper divisors (74208272).

80660488 is a wasteful number, since it uses less digits than its factorization.

80660488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 80660488 is about 8981.1184158767. The cubic root of 80660488 is about 432.0695047061.

The spelling of 80660488 in words is "eighty million, six hundred sixty thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 53 106 212 281 424 562 677 1124 1354 2248 2708 5416 14893 29786 35881 59572 71762 119144 143524 190237 287048 380474 760948 1521896 10082561 20165122 40330244 80660488