220970720 has 48 divisors (see below), whose sum is σ = 540056160. Its totient is φ = 85338624.

The previous prime is 220970699. The next prime is 220970723. The reversal of 220970720 is 27079022.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220970723) 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, 19172 + ... + 28451.

It is an arithmetic number, because the mean of its divisors is an integer number (11251170).

Almost surely, 2^220970720 is an apocalyptic number.

220970720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220970720 is an abundant number, since it is smaller than the sum of its proper divisors (319085440).

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

220970720 is a wasteful number, since it uses less digits than its factorization.

220970720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47667 (or 47659 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 220970720 is about 14865.0839217275. The cubic root of 220970720 is about 604.5676577842.

The spelling of 220970720 in words is "two hundred twenty million, nine hundred seventy thousand, seven hundred twenty".