82977888 has 48 divisors (see below), whose sum is σ = 248935680. Its totient is φ = 23707776.

The previous prime is 82977871. The next prime is 82977899. The reversal of 82977888 is 88877928.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61068 + ... + 62411.

It is an arithmetic number, because the mean of its divisors is an integer number (5186160).

Almost surely, 2^82977888 is an apocalyptic number.

It is an amenable number.

82977888 is an abundant number, since it is smaller than the sum of its proper divisors (165957792).

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

82977888 is a wasteful number, since it uses less digits than its factorization.

82977888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123499 (or 123491 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 57.

The square root of 82977888 is about 9109.2199446495. The cubic root of 82977888 is about 436.1683271160.

The spelling of 82977888 in words is "eighty-two million, nine hundred seventy-seven thousand, eight hundred eighty-eight".