220656500 has 48 divisors (see below), whose sum is σ = 507299520. Its totient is φ = 83613600.

The previous prime is 220656487. The next prime is 220656517. The reversal of 220656500 is 5656022.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 220656500.

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, 2114 + ... + 21113.

It is an arithmetic number, because the mean of its divisors is an integer number (10568740).

Almost surely, 2^220656500 is an apocalyptic number.

220656500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220656500 is an abundant number, since it is smaller than the sum of its proper divisors (286643020).

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

220656500 is a wasteful number, since it uses less digits than its factorization.

220656500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23265 (or 23253 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 220656500 is about 14854.5110993260. The cubic root of 220656500 is about 604.2809571073.

The spelling of 220656500 in words is "two hundred twenty million, six hundred fifty-six thousand, five hundred".