222749856 has 72 divisors (see below), whose sum is σ = 723943584. Its totient is φ = 63642240.

The previous prime is 222749809. The next prime is 222749869. The reversal of 222749856 is 658947222.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53230 + ... + 57261.

It is an arithmetic number, because the mean of its divisors is an integer number (10054772).

Almost surely, 2^222749856 is an apocalyptic number.

It is an amenable number.

222749856 is an abundant number, since it is smaller than the sum of its proper divisors (501193728).

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

222749856 is a wasteful number, since it uses less digits than its factorization.

222749856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110514 (or 110503 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 222749856 is about 14924.8067324170. The cubic root of 222749856 is about 606.1858724674.

The spelling of 222749856 in words is "two hundred twenty-two million, seven hundred forty-nine thousand, eight hundred fifty-six".