222497872 has 20 divisors (see below), whose sum is σ = 442741876. Its totient is φ = 108241920.

The previous prime is 222497861. The next prime is 222497879. The reversal of 222497872 is 278794222.

It can be written as a sum of positive squares in 2 ways, for example, as 198133776 + 24364096 = 14076^2 + 4936^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222497879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187329 + ... + 188512.

Almost surely, 2^222497872 is an apocalyptic number.

It is an amenable number.

222497872 is a deficient number, since it is larger than the sum of its proper divisors (220244004).

222497872 is a wasteful number, since it uses less digits than its factorization.

222497872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375886 (or 375880 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 222497872 is about 14916.3625592837. The cubic root of 222497872 is about 605.9572052401.

The spelling of 222497872 in words is "two hundred twenty-two million, four hundred ninety-seven thousand, eight hundred seventy-two".