220938916 has 48 divisors (see below), whose sum is σ = 453519360. Its totient is φ = 93100320.

The previous prime is 220938911. The next prime is 220938923. The reversal of 220938916 is 619839022.

220938916 = T₂₀₈ + T₂₀₉ + ... + T₁₁₀₀.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (220938911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36481 + ... + 42103.

It is an arithmetic number, because the mean of its divisors is an integer number (9448320).

Almost surely, 2^220938916 is an apocalyptic number.

It is an amenable number.

220938916 is an abundant number, since it is smaller than the sum of its proper divisors (232580444).

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

220938916 is a wasteful number, since it uses less digits than its factorization.

220938916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704 (or 5702 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 220938916 is about 14864.0141280880. The cubic root of 220938916 is about 604.5386515395.

The spelling of 220938916 in words is "two hundred twenty million, nine hundred thirty-eight thousand, nine hundred sixteen".