82087872 has 28 divisors (see below), whose sum is σ = 217191336. Its totient is φ = 27362560.

The previous prime is 82087871. The next prime is 82087879. The reversal of 82087872 is 27878028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82087871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213579 + ... + 213962.

Almost surely, 2^82087872 is an apocalyptic number.

It is an amenable number.

82087872 is an abundant number, since it is smaller than the sum of its proper divisors (135103464).

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

82087872 is a wasteful number, since it uses less digits than its factorization.

82087872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427556 (or 427546 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 82087872 is about 9060.2357585220. The cubic root of 82087872 is about 434.6032794683.

The spelling of 82087872 in words is "eighty-two million, eighty-seven thousand, eight hundred seventy-two".