81250792 has 16 divisors (see below), whose sum is σ = 174108960. Its totient is φ = 34821744.

The previous prime is 81250787. The next prime is 81250823. The reversal of 81250792 is 29705218.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725398 + ... + 725509.

It is an arithmetic number, because the mean of its divisors is an integer number (10881810).

Almost surely, 2^81250792 is an apocalyptic number.

It is an amenable number.

81250792 is an abundant number, since it is smaller than the sum of its proper divisors (92858168).

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

81250792 is a wasteful number, since it uses less digits than its factorization.

81250792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450920 (or 1450916 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 81250792 is about 9013.9221208085. The cubic root of 81250792 is about 433.1209599713.

The spelling of 81250792 in words is "eighty-one million, two hundred fifty thousand, seven hundred ninety-two".