222404872 has 8 divisors (see below), whose sum is σ = 417009150. Its totient is φ = 111202432.

The previous prime is 222404867. The next prime is 222404879. The reversal of 222404872 is 278404222.

It can be written as a sum of positive squares in only one way, i.e., 176517796 + 45887076 = 13286^2 + 6774^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (222404879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13900297 + ... + 13900312.

Almost surely, 2^222404872 is an apocalyptic number.

It is an amenable number.

222404872 is a deficient number, since it is larger than the sum of its proper divisors (194604278).

222404872 is a wasteful number, since it uses less digits than its factorization.

222404872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27800615 (or 27800611 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 222404872 is about 14913.2448514735. The cubic root of 222404872 is about 605.8727671687.

The spelling of 222404872 in words is "two hundred twenty-two million, four hundred four thousand, eight hundred seventy-two".