222657420 has 48 divisors (see below), whose sum is σ = 632233728. Its totient is φ = 58537920.

The previous prime is 222657403. The next prime is 222657431. The reversal of 222657420 is 24756222.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 21874 + ... + 30393.

It is an arithmetic number, because the mean of its divisors is an integer number (13171536).

Almost surely, 2^222657420 is an apocalyptic number.

222657420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222657420 is an abundant number, since it is smaller than the sum of its proper divisors (409576308).

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

222657420 is a wasteful number, since it uses less digits than its factorization.

222657420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52350 (or 52348 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 222657420 is about 14921.7096875660. The cubic root of 222657420 is about 606.1020098618.

The spelling of 222657420 in words is "two hundred twenty-two million, six hundred fifty-seven thousand, four hundred twenty".