80581992 has 32 divisors (see below), whose sum is σ = 201696480. Its totient is φ = 26828480.

The previous prime is 80581987. The next prime is 80581993. The reversal of 80581992 is 29918508.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80581993) by changing a digit.

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, 26923 + ... + 29765.

It is an arithmetic number, because the mean of its divisors is an integer number (6303015).

Almost surely, 2^80581992 is an apocalyptic number.

It is an amenable number.

80581992 is an abundant number, since it is smaller than the sum of its proper divisors (121114488).

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

80581992 is a wasteful number, since it uses less digits than its factorization.

80581992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033 (or 4029 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 80581992 is about 8976.7472950953. The cubic root of 80581992 is about 431.9293008446.

The spelling of 80581992 in words is "eighty million, five hundred eighty-one thousand, nine hundred ninety-two".