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80530492 = 2276147149
BaseRepresentation
bin1001100110011…
…00110000111100
312121112101001211
410303030300330
5131103433432
611554014204
71665332530
oct463146074
9177471054
1080530492
1141503829
1222b77364
13138b79a3
14a9a3bc0
15710ad47
hex4cccc3c

80530492 has 24 divisors (see below), whose sum is σ = 163704800. Its totient is φ = 33946560.

The previous prime is 80530487. The next prime is 80530511. The reversal of 80530492 is 29403508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21867 + ... + 25282.

Almost surely, 280530492 is an apocalyptic number.

It is an amenable number.

80530492 is an abundant number, since it is smaller than the sum of its proper divisors (83174308).

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

80530492 is a wasteful number, since it uses less digits than its factorization.

80530492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47221 (or 47219 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 80530492 is about 8973.8783143076. The cubic root of 80530492 is about 431.8372658091.

The spelling of 80530492 in words is "eighty million, five hundred thirty thousand, four hundred ninety-two".

Divisors: 1 2 4 7 14 28 61 122 244 427 854 1708 47149 94298 188596 330043 660086 1320172 2876089 5752178 11504356 20132623 40265246 80530492