220457632 has 24 divisors (see below), whose sum is σ = 459558036. Its totient is φ = 103744512.

The previous prime is 220457609. The next prime is 220457639. The reversal of 220457632 is 236754022.

It can be written as a sum of positive squares in 2 ways, for example, as 210946576 + 9511056 = 14524^2 + 3084^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220457594 and 220457603.

It is not an unprimeable number, because it can be changed into a prime (220457639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202083 + ... + 203170.

Almost surely, 2^220457632 is an apocalyptic number.

It is an amenable number.

220457632 is an abundant number, since it is smaller than the sum of its proper divisors (239100404).

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

220457632 is a wasteful number, since it uses less digits than its factorization.

220457632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405280 (or 405272 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 220457632 is about 14847.8157316152. The cubic root of 220457632 is about 604.0993652584.

The spelling of 220457632 in words is "two hundred twenty million, four hundred fifty-seven thousand, six hundred thirty-two".