220628831276 has 12 divisors (see below), whose sum is σ = 441257662608. Its totient is φ = 94555213392.

The previous prime is 220628831273. The next prime is 220628831321. The reversal of 220628831276 is 672138826022.

220628831276 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 220628831276.

It is not an unprimeable number, because it can be changed into a prime (220628831273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3939800531 + ... + 3939800586.

It is an arithmetic number, because the mean of its divisors is an integer number (36771471884).

Almost surely, 2^220628831276 is an apocalyptic number.

It is an amenable number.

220628831276 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

220628831276 is a wasteful number, since it uses less digits than its factorization.

220628831276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7879601128 (or 7879601126 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 220628831276 in words is "two hundred twenty billion, six hundred twenty-eight million, eight hundred thirty-one thousand, two hundred seventy-six".