220807980 has 36 divisors (see below), whose sum is σ = 669784752. Its totient is φ = 58882080.

The previous prime is 220807973. The next prime is 220807997. The reversal of 220807980 is 89708022.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 613176 + ... + 613535.

It is an arithmetic number, because the mean of its divisors is an integer number (18605132).

Almost surely, 2^220807980 is an apocalyptic number.

220807980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220807980 is an abundant number, since it is smaller than the sum of its proper divisors (448976772).

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

220807980 is a wasteful number, since it uses less digits than its factorization.

220807980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226726 (or 1226721 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 220807980 is about 14859.6090123529. The cubic root of 220807980 is about 604.4192044750.

The spelling of 220807980 in words is "two hundred twenty million, eight hundred seven thousand, nine hundred eighty".