220131628 has 12 divisors (see below), whose sum is σ = 385761040. Its totient is φ = 109914192.

The previous prime is 220131619. The next prime is 220131629. The reversal of 220131628 is 826131022.

It is not an unprimeable number, because it can be changed into a prime (220131629) 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, 34608 + ... + 40471.

Almost surely, 2^220131628 is an apocalyptic number.

It is an amenable number.

220131628 is a deficient number, since it is larger than the sum of its proper divisors (165629412).

220131628 is a wasteful number, since it uses less digits than its factorization.

220131628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75816 (or 75814 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 220131628 is about 14836.8334896635. The cubic root of 220131628 is about 603.8014456345.

The spelling of 220131628 in words is "two hundred twenty million, one hundred thirty-one thousand, six hundred twenty-eight".