82987900 has 36 divisors (see below), whose sum is σ = 183925728. Its totient is φ = 32487040.

The previous prime is 82987871. The next prime is 82987903. The reversal of 82987900 is 978928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82987903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4129 + ... + 13528.

It is an arithmetic number, because the mean of its divisors is an integer number (5109048).

Almost surely, 2^82987900 is an apocalyptic number.

It is an amenable number.

82987900 is an abundant number, since it is smaller than the sum of its proper divisors (100937828).

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

82987900 is a wasteful number, since it uses less digits than its factorization.

82987900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17718 (or 17711 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 82987900 is about 9109.7694811669. The cubic root of 82987900 is about 436.1858689044.

The spelling of 82987900 in words is "eighty-two million, nine hundred eighty-seven thousand, nine hundred".