216795904 has 54 divisors (see below), whose sum is σ = 468687156. Its totient is φ = 100039680.

The previous prime is 216795899. The next prime is 216795919. The reversal of 216795904 is 409597612.

It is a happy number.

216795904 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40759 + ... + 45769.

Almost surely, 2^216795904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216795904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234343578).

216795904 is an abundant number, since it is smaller than the sum of its proper divisors (251891252).

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

216795904 is an equidigital number, since it uses as much as digits as its factorization.

216795904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053 (or 5026 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 216795904 is about 14723.9907633766. The cubic root of 216795904 is about 600.7360448422.

The spelling of 216795904 in words is "two hundred sixteen million, seven hundred ninety-five thousand, nine hundred four".