222291720 has 96 divisors (see below), whose sum is σ = 825664320. Its totient is φ = 50808960.

The previous prime is 222291703. The next prime is 222291733. The reversal of 222291720 is 27192222.

222291720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41586 + ... + 46625.

It is an arithmetic number, because the mean of its divisors is an integer number (8600670).

Almost surely, 2^222291720 is an apocalyptic number.

222291720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222291720 is an abundant number, since it is smaller than the sum of its proper divisors (603372600).

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

222291720 is a wasteful number, since it uses less digits than its factorization.

222291720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88235 (or 88228 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 222291720 is about 14909.4506941067. The cubic root of 222291720 is about 605.7700006177.

The spelling of 222291720 in words is "two hundred twenty-two million, two hundred ninety-one thousand, seven hundred twenty".