220723536 has 80 divisors (see below), whose sum is σ = 624245760. Its totient is φ = 66648960.

The previous prime is 220723519. The next prime is 220723567. The reversal of 220723536 is 635327022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199561 + ... + 200663.

It is an arithmetic number, because the mean of its divisors is an integer number (7803072).

Almost surely, 2^220723536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220723536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312122880).

220723536 is an abundant number, since it is smaller than the sum of its proper divisors (403522224).

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

220723536 is a wasteful number, since it uses less digits than its factorization.

220723536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 220723536 is about 14856.7673469029. The cubic root of 220723536 is about 604.3421449365.

The spelling of 220723536 in words is "two hundred twenty million, seven hundred twenty-three thousand, five hundred thirty-six".