213903936 has 56 divisors (see below), whose sum is σ = 628843040. Its totient is φ = 71300736.

The previous prime is 213903917. The next prime is 213903959. The reversal of 213903936 is 639309312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 213903936.

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, 60166 + ... + 63621.

It is an arithmetic number, because the mean of its divisors is an integer number (11229340).

Almost surely, 2^213903936 is an apocalyptic number.

It is an amenable number.

213903936 is an abundant number, since it is smaller than the sum of its proper divisors (414939104).

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

213903936 is a wasteful number, since it uses less digits than its factorization.

213903936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123808 (or 123792 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 213903936 is about 14625.4550698431. The cubic root of 213903936 is about 598.0528880939.

The spelling of 213903936 in words is "two hundred thirteen million, nine hundred three thousand, nine hundred thirty-six".