220654920 has 32 divisors (see below), whose sum is σ = 661965120. Its totient is φ = 58841280.

The previous prime is 220654897. The next prime is 220654927. The reversal of 220654920 is 29456022.

220654920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (220654927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919276 + ... + 919515.

It is an arithmetic number, because the mean of its divisors is an integer number (20686410).

Almost surely, 2^220654920 is an apocalyptic number.

220654920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220654920 is an abundant number, since it is smaller than the sum of its proper divisors (441310200).

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

220654920 is a wasteful number, since it uses less digits than its factorization.

220654920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838805 (or 1838801 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 220654920 is about 14854.4579167333. The cubic root of 220654920 is about 604.2795147958.

The spelling of 220654920 in words is "two hundred twenty million, six hundred fifty-four thousand, nine hundred twenty".