222379920 has 120 divisors (see below), whose sum is σ = 853534656. Its totient is φ = 50828544.

The previous prime is 222379903. The next prime is 222379951. The reversal of 222379920 is 29973222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17022 + ... + 27101.

Almost surely, 2^222379920 is an apocalyptic number.

222379920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222379920 is an abundant number, since it is smaller than the sum of its proper divisors (631154736).

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

222379920 is a wasteful number, since it uses less digits than its factorization.

222379920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44149 (or 44140 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 222379920 is about 14912.4082562140. The cubic root of 222379920 is about 605.8501083385.

The spelling of 222379920 in words is "two hundred twenty-two million, three hundred seventy-nine thousand, nine hundred twenty".