220669428 has 48 divisors (see below), whose sum is σ = 590413824. Its totient is φ = 62838240.

The previous prime is 220669409. The next prime is 220669441. The reversal of 220669428 is 824966022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21901 + ... + 30347.

It is an arithmetic number, because the mean of its divisors is an integer number (12300288).

Almost surely, 2^220669428 is an apocalyptic number.

220669428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

220669428 is an abundant number, since it is smaller than the sum of its proper divisors (369744396).

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

220669428 is a wasteful number, since it uses less digits than its factorization.

220669428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772 (or 8770 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 220669428 is about 14854.9462469576. The cubic root of 220669428 is about 604.2927582426.

The spelling of 220669428 in words is "two hundred twenty million, six hundred sixty-nine thousand, four hundred twenty-eight".