220454428 has 12 divisors (see below), whose sum is σ = 385906752. Its totient is φ = 110195360.

The previous prime is 220454387. The next prime is 220454449. The reversal of 220454428 is 824454022.

It is a self number, because there is not a number n which added to its sum of digits gives 220454428.

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, 14901 + ... + 25747.

It is an arithmetic number, because the mean of its divisors is an integer number (32158896).

Almost surely, 2^220454428 is an apocalyptic number.

It is an amenable number.

220454428 is a deficient number, since it is larger than the sum of its proper divisors (165452324).

220454428 is a wasteful number, since it uses less digits than its factorization.

220454428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15932 (or 15930 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 220454428 is about 14847.7078365652. The cubic root of 220454428 is about 604.0964387040.

The spelling of 220454428 in words is "two hundred twenty million, four hundred fifty-four thousand, four hundred twenty-eight".