81882927 has 32 divisors (see below), whose sum is σ = 139968000. Its totient is φ = 46341504.

The previous prime is 81882919. The next prime is 81882929. The reversal of 81882927 is 72928818.

It is a happy number.

It is not a de Polignac number, because 81882927 - 2³ = 81882919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81882929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18199 + ... + 22247.

It is an arithmetic number, because the mean of its divisors is an integer number (4374000).

Almost surely, 2^81882927 is an apocalyptic number.

81882927 is a deficient number, since it is larger than the sum of its proper divisors (58085073).

81882927 is a wasteful number, since it uses less digits than its factorization.

81882927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172 (or 4166 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 81882927 is about 9048.9185541699. The cubic root of 81882927 is about 434.2412934023.

The spelling of 81882927 in words is "eighty-one million, eight hundred eighty-two thousand, nine hundred twenty-seven".