222857740 has 24 divisors (see below), whose sum is σ = 534858912. Its totient is φ = 76408320.

The previous prime is 222857737. The next prime is 222857759. The reversal of 222857740 is 47758222.

It is a self number, because there is not a number n which added to its sum of digits gives 222857740.

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, 795781 + ... + 796060.

It is an arithmetic number, because the mean of its divisors is an integer number (22285788).

Almost surely, 2^222857740 is an apocalyptic number.

222857740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222857740 is an abundant number, since it is smaller than the sum of its proper divisors (312001172).

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

222857740 is a wasteful number, since it uses less digits than its factorization.

222857740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591857 (or 1591855 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 222857740 is about 14928.4205460591. The cubic root of 222857740 is about 606.2837209429.

The spelling of 222857740 in words is "two hundred twenty-two million, eight hundred fifty-seven thousand, seven hundred forty".