220631296 has 36 divisors (see below), whose sum is σ = 452322892. Its totient is φ = 107329536.

The previous prime is 220631273. The next prime is 220631297. The reversal of 220631296 is 692136022.

It can be written as a sum of positive squares in 2 ways, for example, as 93392896 + 127238400 = 9664^2 + 11280^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (220631297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175 + ... + 21118.

Almost surely, 2^220631296 is an apocalyptic number.

It is an amenable number.

220631296 is an abundant number, since it is smaller than the sum of its proper divisors (231691596).

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

220631296 is an equidigital number, since it uses as much as digits as its factorization.

220631296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23346 (or 23332 counting only the distinct ones).

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

The square root of 220631296 is about 14853.6627132839. The cubic root of 220631296 is about 604.2579486799.

The spelling of 220631296 in words is "two hundred twenty million, six hundred thirty-one thousand, two hundred ninety-six".