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80669308 = 22112917863
BaseRepresentation
bin1001100111011…
…10101001111100
312121210102111011
410303232221330
5131122404213
612001005004
71666451326
oct463565174
9177712434
1080669308
1141599055
1223023764
1313935c25
14a9dc616
15713703d
hex4ceea7c

80669308 has 12 divisors (see below), whose sum is σ = 141304240. Its totient is φ = 40296672.

The previous prime is 80669293. The next prime is 80669317. The reversal of 80669308 is 80396608.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4416 + ... + 13447.

Almost surely, 280669308 is an apocalyptic number.

It is an amenable number.

80669308 is a deficient number, since it is larger than the sum of its proper divisors (60634932).

80669308 is a wasteful number, since it uses less digits than its factorization.

80669308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18996 (or 18994 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 80669308 is about 8981.6094326128. The cubic root of 80669308 is about 432.0852526649.

The spelling of 80669308 in words is "eighty million, six hundred sixty-nine thousand, three hundred eight".

Divisors: 1 2 4 1129 2258 4516 17863 35726 71452 20167327 40334654 80669308