220646012 has 48 divisors (see below), whose sum is σ = 418467840. Its totient is φ = 101466432.

The previous prime is 220646011. The next prime is 220646021. The reversal of 220646012 is 210646022.

It is a super-2 number, since 2×220646012² = 97369325223008288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220646011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 796418 + ... + 796694.

It is an arithmetic number, because the mean of its divisors is an integer number (8718080).

Almost surely, 2^220646012 is an apocalyptic number.

It is an amenable number.

220646012 is a deficient number, since it is larger than the sum of its proper divisors (197821828).

220646012 is a wasteful number, since it uses less digits than its factorization.

220646012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 220646012 is about 14854.1580710588. The cubic root of 220646012 is about 604.2713829515.

The spelling of 220646012 in words is "two hundred twenty million, six hundred forty-six thousand, twelve".