216501796 has 27 divisors (see below), whose sum is σ = 441155547. Its totient is φ = 92698200.

The previous prime is 216501781. The next prime is 216501797. The reversal of 216501796 is 697105612.

The square root of 216501796 is 14714.

It is a perfect power (a square), and thus also a powerful number.

216501796 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (216501797) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 205471 + ... + 206521.

Almost surely, 2^216501796 is an apocalyptic number.

216501796 is the 14714-th square number.

It is an amenable number.

216501796 is an abundant number, since it is smaller than the sum of its proper divisors (224653751).

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

216501796 is an equidigital number, since it uses as much as digits as its factorization.

216501796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The cubic root of 216501796 is about 600.4642665942.

The spelling of 216501796 in words is "two hundred sixteen million, five hundred one thousand, seven hundred ninety-six".