216356104 has 8 divisors (see below), whose sum is σ = 405667710. Its totient is φ = 108178048.

The previous prime is 216356083. The next prime is 216356117. The reversal of 216356104 is 401653612.

It can be written as a sum of positive squares in only one way, i.e., 216031204 + 324900 = 14698^2 + 570^2 .

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

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13522249 + ... + 13522264.

Almost surely, 2^216356104 is an apocalyptic number.

It is an amenable number.

216356104 is a deficient number, since it is larger than the sum of its proper divisors (189311606).

216356104 is a wasteful number, since it uses less digits than its factorization.

216356104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27044519 (or 27044515 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 216356104 is about 14709.0483716657. The cubic root of 216356104 is about 600.3295448931.

The spelling of 216356104 in words is "two hundred sixteen million, three hundred fifty-six thousand, one hundred four".