222158464 has 64 divisors (see below), whose sum is σ = 488890080. Its totient is φ = 99712000.

The previous prime is 222158441. The next prime is 222158477. The reversal of 222158464 is 464851222.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115914 + ... + 117814.

Almost surely, 2^222158464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222158464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244445040).

222158464 is an abundant number, since it is smaller than the sum of its proper divisors (266731616).

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

222158464 is a wasteful number, since it uses less digits than its factorization.

222158464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009 (or 1997 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 222158464 is about 14904.9811807999. The cubic root of 222158464 is about 605.6489305471.

The spelling of 222158464 in words is "two hundred twenty-two million, one hundred fifty-eight thousand, four hundred sixty-four".