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80687304 = 23321765921
BaseRepresentation
bin1001100111100…
…11000011001000
312121211100011200
410303303003020
5131123443204
612001224200
71666554645
oct463630310
9177740150
1080687304
1141600625
1223032060
1313941189
14aa04dcc
15713c539
hex4cf30c8

80687304 has 48 divisors (see below), whose sum is σ = 231386220. Its totient is φ = 25313280.

The previous prime is 80687273. The next prime is 80687329. The reversal of 80687304 is 40378608.

It can be written as a sum of positive squares in 2 ways, for example, as 79174404 + 1512900 = 8898^2 + 1230^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31737 + ... + 34184.

Almost surely, 280687304 is an apocalyptic number.

It is an amenable number.

80687304 is an abundant number, since it is smaller than the sum of its proper divisors (150698916).

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

80687304 is a wasteful number, since it uses less digits than its factorization.

80687304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65950 (or 65943 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 80687304 is about 8982.6112016496. The cubic root of 80687304 is about 432.1173806545.

The spelling of 80687304 in words is "eighty million, six hundred eighty-seven thousand, three hundred four".

Divisors: 1 2 3 4 6 8 9 12 17 18 24 34 36 51 68 72 102 136 153 204 306 408 612 1224 65921 131842 197763 263684 395526 527368 593289 791052 1120657 1186578 1582104 2241314 2373156 3361971 4482628 4746312 6723942 8965256 10085913 13447884 20171826 26895768 40343652 80687304