216413896 has 8 divisors (see below), whose sum is σ = 405776070. Its totient is φ = 108206944.

The previous prime is 216413881. The next prime is 216413929. The reversal of 216413896 is 698314612.

216413896 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 215796100 + 617796 = 14690^2 + 786^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13525861 + ... + 13525876.

Almost surely, 2^216413896 is an apocalyptic number.

It is an amenable number.

216413896 is a deficient number, since it is larger than the sum of its proper divisors (189362174).

216413896 is a wasteful number, since it uses less digits than its factorization.

216413896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27051743 (or 27051739 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 216413896 is about 14711.0127455590. The cubic root of 216413896 is about 600.3829925129.

The spelling of 216413896 in words is "two hundred sixteen million, four hundred thirteen thousand, eight hundred ninety-six".