216932620 has 24 divisors (see below), whose sum is σ = 456863904. Its totient is φ = 86524416.

The previous prime is 216932609. The next prime is 216932621. The reversal of 216932620 is 26239612.

It is not an unprimeable number, because it can be changed into a prime (216932621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8304 + ... + 22423.

It is an arithmetic number, because the mean of its divisors is an integer number (19035996).

Almost surely, 2^216932620 is an apocalyptic number.

216932620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216932620 is an abundant number, since it is smaller than the sum of its proper divisors (239931284).

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

216932620 is a wasteful number, since it uses less digits than its factorization.

216932620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31089 (or 31087 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 216932620 is about 14728.6326588723. The cubic root of 216932620 is about 600.8622971826.

The spelling of 216932620 in words is "two hundred sixteen million, nine hundred thirty-two thousand, six hundred twenty".