220157920 has 24 divisors (see below), whose sum is σ = 520123464. Its totient is φ = 88063104.

The previous prime is 220157891. The next prime is 220157923. The reversal of 220157920 is 29751022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220157923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687834 + ... + 688153.

It is an arithmetic number, because the mean of its divisors is an integer number (21671811).

Almost surely, 2^220157920 is an apocalyptic number.

220157920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220157920 is an abundant number, since it is smaller than the sum of its proper divisors (299965544).

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

220157920 is a wasteful number, since it uses less digits than its factorization.

220157920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376002 (or 1375994 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 220157920 is about 14837.7195013250. The cubic root of 220157920 is about 603.8254835488.

The spelling of 220157920 in words is "two hundred twenty million, one hundred fifty-seven thousand, nine hundred twenty".