215123982 has 32 divisors (see below), whose sum is σ = 440640000. Its totient is φ = 69984768.

The previous prime is 215123959. The next prime is 215124011. The reversal of 215123982 is 289321512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125769 + ... + 127467.

It is an arithmetic number, because the mean of its divisors is an integer number (13770000).

Almost surely, 2^215123982 is an apocalyptic number.

215123982 is an abundant number, since it is smaller than the sum of its proper divisors (225516018).

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

215123982 is a wasteful number, since it uses less digits than its factorization.

215123982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200.

The product of its digits is 8640, while the sum is 33.

The square root of 215123982 is about 14667.1054404064. The cubic root of 215123982 is about 599.1877731977.

The spelling of 215123982 in words is "two hundred fifteen million, one hundred twenty-three thousand, nine hundred eighty-two".