222878730 has 16 divisors (see below), whose sum is σ = 534909024. Its totient is φ = 59434320.

The previous prime is 222878699. The next prime is 222878741. The reversal of 222878730 is 37878222.

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, 3714616 + ... + 3714675.

It is an arithmetic number, because the mean of its divisors is an integer number (33431814).

Almost surely, 2^222878730 is an apocalyptic number.

222878730 is an abundant number, since it is smaller than the sum of its proper divisors (312030294).

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

222878730 is a wasteful number, since it uses less digits than its factorization.

222878730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7429301.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 222878730 is about 14929.1235509657. The cubic root of 222878730 is about 606.3027547531.

The spelling of 222878730 in words is "two hundred twenty-two million, eight hundred seventy-eight thousand, seven hundred thirty".