216890104 has 16 divisors (see below), whose sum is σ = 408292920. Its totient is φ = 108012000.

The previous prime is 216890071. The next prime is 216890153. The reversal of 216890104 is 401098612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51999 + ... + 56014.

Almost surely, 2^216890104 is an apocalyptic number.

It is an amenable number.

216890104 is a deficient number, since it is larger than the sum of its proper divisors (191402816).

216890104 is a wasteful number, since it uses less digits than its factorization.

216890104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108270 (or 108266 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 216890104 is about 14727.1892769802. The cubic root of 216890104 is about 600.8230408604.

The spelling of 216890104 in words is "two hundred sixteen million, eight hundred ninety thousand, one hundred four".