80492840 has 32 divisors (see below), whose sum is σ = 185529960. Its totient is φ = 31411200.

The previous prime is 80492809. The next prime is 80492857. The reversal of 80492840 is 4829408.

It can be written as a sum of positive squares in 4 ways, for example, as 43744996 + 36747844 = 6614^2 + 6062^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80492840.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22901 + ... + 26180.

Almost surely, 2^80492840 is an apocalyptic number.

It is an amenable number.

80492840 is an abundant number, since it is smaller than the sum of its proper divisors (105037120).

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

80492840 is a wasteful number, since it uses less digits than its factorization.

80492840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49133 (or 49129 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 80492840 is about 8971.7802023902. The cubic root of 80492840 is about 431.7699535359.

The spelling of 80492840 in words is "eighty million, four hundred ninety-two thousand, eight hundred forty".