82987086 has 48 divisors (see below), whose sum is σ = 207933264. Its totient is φ = 21885696.

The previous prime is 82987063. The next prime is 82987097. The reversal of 82987086 is 68078928.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7035 + ... + 14678.

It is an arithmetic number, because the mean of its divisors is an integer number (4331943).

Almost surely, 2^82987086 is an apocalyptic number.

82987086 is an abundant number, since it is smaller than the sum of its proper divisors (124946178).

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

82987086 is a wasteful number, since it uses less digits than its factorization.

82987086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21745 (or 21738 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 82987086 is about 9109.7248037468. The cubic root of 82987086 is about 436.1844427670.

The spelling of 82987086 in words is "eighty-two million, nine hundred eighty-seven thousand, eighty-six".