220744536 has 32 divisors (see below), whose sum is σ = 552277440. Its totient is φ = 73526048.

The previous prime is 220744471. The next prime is 220744567. The reversal of 220744536 is 635447022.

220744536 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220744497 and 220744506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40315 + ... + 45461.

It is an arithmetic number, because the mean of its divisors is an integer number (17258670).

Almost surely, 2^220744536 is an apocalyptic number.

It is an amenable number.

220744536 is an abundant number, since it is smaller than the sum of its proper divisors (331532904).

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

220744536 is a wasteful number, since it uses less digits than its factorization.

220744536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6943 (or 6939 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 220744536 is about 14857.4740787255. The cubic root of 220744536 is about 604.3613103637.

The spelling of 220744536 in words is "two hundred twenty million, seven hundred forty-four thousand, five hundred thirty-six".