216245456 has 20 divisors (see below), whose sum is σ = 478829472. Its totient is φ = 92676576.

The previous prime is 216245437. The next prime is 216245467. The reversal of 216245456 is 654542612.

It is a congruent number.

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, 965270 + ... + 965493.

Almost surely, 2^216245456 is an apocalyptic number.

It is an amenable number.

216245456 is an abundant number, since it is smaller than the sum of its proper divisors (262584016).

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

216245456 is a wasteful number, since it uses less digits than its factorization.

216245456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930778 (or 1930772 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 216245456 is about 14705.2866684060. The cubic root of 216245456 is about 600.2271880392.

The spelling of 216245456 in words is "two hundred sixteen million, two hundred forty-five thousand, four hundred fifty-six".