224128672 has 24 divisors (see below), whose sum is σ = 442986516. Its totient is φ = 111624192.

The previous prime is 224128657. The next prime is 224128699. The reversal of 224128672 is 276821422.

It can be written as a sum of positive squares in 2 ways, for example, as 199487376 + 24641296 = 14124^2 + 4964^2 .

It is a super-2 number, since 2×224128672² = 100467323224967168, which contains 22 as substring.

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, 5403 + ... + 21850.

Almost surely, 2^224128672 is an apocalyptic number.

It is an amenable number.

224128672 is a deficient number, since it is larger than the sum of its proper divisors (218857844).

224128672 is a wasteful number, since it uses less digits than its factorization.

224128672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27520 (or 27512 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 224128672 is about 14970.9275597740. The cubic root of 224128672 is about 607.4340590137.

The spelling of 224128672 in words is "two hundred twenty-four million, one hundred twenty-eight thousand, six hundred seventy-two".