81882804 has 12 divisors (see below), whose sum is σ = 191059904. Its totient is φ = 27294264.

The previous prime is 81882797. The next prime is 81882833. The reversal of 81882804 is 40828818.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 3411772 + ... + 3411795.

Almost surely, 2^81882804 is an apocalyptic number.

It is an amenable number.

81882804 is an abundant number, since it is smaller than the sum of its proper divisors (109177100).

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

81882804 is a wasteful number, since it uses less digits than its factorization.

81882804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6823574 (or 6823572 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 39.

The square root of 81882804 is about 9048.9117577751. The cubic root of 81882804 is about 434.2410759711.

The spelling of 81882804 in words is "eighty-one million, eight hundred eighty-two thousand, eight hundred four".