220570780 has 24 divisors (see below), whose sum is σ = 464405760. Its totient is φ = 87998400.

The previous prime is 220570729. The next prime is 220570793. The reversal of 220570780 is 87075022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6396 + ... + 21955.

It is an arithmetic number, because the mean of its divisors is an integer number (19350240).

Almost surely, 2^220570780 is an apocalyptic number.

220570780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220570780 is an abundant number, since it is smaller than the sum of its proper divisors (243834980).

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

220570780 is a wasteful number, since it uses less digits than its factorization.

220570780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28749 (or 28747 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 220570780 is about 14851.6255002609. The cubic root of 220570780 is about 604.2026971986.

The spelling of 220570780 in words is "two hundred twenty million, five hundred seventy thousand, seven hundred eighty".