81462892 has 18 divisors (see below), whose sum is σ = 165835572. Its totient is φ = 34912584.

The previous prime is 81462889. The next prime is 81462949. The reversal of 81462892 is 29826418.

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 5 ways as a sum of consecutive naturals, for example, 207618 + ... + 208009.

Almost surely, 2^81462892 is an apocalyptic number.

It is an amenable number.

81462892 is an abundant number, since it is smaller than the sum of its proper divisors (84372680).

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

81462892 is a wasteful number, since it uses less digits than its factorization.

81462892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415645 (or 415636 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 81462892 is about 9025.6795866018. The cubic root of 81462892 is about 433.4975107027.

The spelling of 81462892 in words is "eighty-one million, four hundred sixty-two thousand, eight hundred ninety-two".