220694780 has 12 divisors (see below), whose sum is σ = 463459080. Its totient is φ = 88277904.

The previous prime is 220694779. The next prime is 220694827. The reversal of 220694780 is 87496022.

220694780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5517350 + ... + 5517389.

It is an arithmetic number, because the mean of its divisors is an integer number (38621590).

Almost surely, 2^220694780 is an apocalyptic number.

220694780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220694780 is an abundant number, since it is smaller than the sum of its proper divisors (242764300).

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

220694780 is a wasteful number, since it uses less digits than its factorization.

220694780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11034748 (or 11034746 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 220694780 is about 14855.7995409200. The cubic root of 220694780 is about 604.3158991061.

The spelling of 220694780 in words is "two hundred twenty million, six hundred ninety-four thousand, seven hundred eighty".