438212256 has 24 divisors (see below), whose sum is σ = 1150307424. Its totient is φ = 146070720.

The previous prime is 438212209. The next prime is 438212263. The reversal of 438212256 is 652212834.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2282260 + ... + 2282451.

It is an arithmetic number, because the mean of its divisors is an integer number (47929476).

Almost surely, 2^438212256 is an apocalyptic number.

It is an amenable number.

438212256 is an abundant number, since it is smaller than the sum of its proper divisors (712095168).

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

438212256 is a wasteful number, since it uses less digits than its factorization.

438212256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4564724 (or 4564716 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 438212256 is about 20933.5199142428. The cubic root of 438212256 is about 759.5589869823.

The spelling of 438212256 in words is "four hundred thirty-eight million, two hundred twelve thousand, two hundred fifty-six".