222272660 has 12 divisors (see below), whose sum is σ = 466772628. Its totient is φ = 88909056.

The previous prime is 222272657. The next prime is 222272681. The reversal of 222272660 is 66272222.

It can be written as a sum of positive squares in 2 ways, for example, as 125171344 + 97101316 = 11188^2 + 9854^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5556797 + ... + 5556836.

It is an arithmetic number, because the mean of its divisors is an integer number (38897719).

Almost surely, 2^222272660 is an apocalyptic number.

222272660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222272660 is an abundant number, since it is smaller than the sum of its proper divisors (244499968).

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

222272660 is a wasteful number, since it uses less digits than its factorization.

222272660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11113642 (or 11113640 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 222272660 is about 14908.8114885124. The cubic root of 222272660 is about 605.7526865731.

The spelling of 222272660 in words is "two hundred twenty-two million, two hundred seventy-two thousand, six hundred sixty".