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80542904 = 23132692879
BaseRepresentation
bin1001100110011…
…11110010111000
312121120000002112
410303033302320
5131104333104
611554151452
71665413651
oct463176270
9177500075
1080542904
1141512092
1222b82588
13138c0530
14a9a8528
15710e86e
hex4ccfcb8

80542904 has 32 divisors (see below), whose sum is σ = 163296000. Its totient is φ = 37022592.

The previous prime is 80542879. The next prime is 80542907. The reversal of 80542904 is 40924508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80542907) 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, 26537 + ... + 29415.

It is an arithmetic number, because the mean of its divisors is an integer number (5103000).

Almost surely, 280542904 is an apocalyptic number.

It is an amenable number.

80542904 is an abundant number, since it is smaller than the sum of its proper divisors (82753096).

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

80542904 is a wasteful number, since it uses less digits than its factorization.

80542904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167 (or 3163 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 80542904 is about 8974.5698504162. The cubic root of 80542904 is about 431.8594507342.

The spelling of 80542904 in words is "eighty million, five hundred forty-two thousand, nine hundred four".

Divisors: 1 2 4 8 13 26 52 104 269 538 1076 2152 2879 3497 5758 6994 11516 13988 23032 27976 37427 74854 149708 299416 774451 1548902 3097804 6195608 10067863 20135726 40271452 80542904