216456044 has 12 divisors (see below), whose sum is σ = 432912144. Its totient is φ = 92766864.

The previous prime is 216456041. The next prime is 216456049. The reversal of 216456044 is 440654612.

216456044 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 216456044.

It is not an unprimeable number, because it can be changed into a prime (216456041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3865259 + ... + 3865314.

It is an arithmetic number, because the mean of its divisors is an integer number (36076012).

Almost surely, 2^216456044 is an apocalyptic number.

It is an amenable number.

216456044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

216456044 is a wasteful number, since it uses less digits than its factorization.

216456044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7730584 (or 7730582 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 216456044 is about 14712.4452080543. The cubic root of 216456044 is about 600.4219661344.

The spelling of 216456044 in words is "two hundred sixteen million, four hundred fifty-six thousand, forty-four".