228472172 has 12 divisors (see below), whose sum is σ = 409578456. Its totient is φ = 111449760.

The previous prime is 228472147. The next prime is 228472193. The reversal of 228472172 is 271274822.

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, 696398 + ... + 696725.

It is an arithmetic number, because the mean of its divisors is an integer number (34131538).

Almost surely, 2^228472172 is an apocalyptic number.

It is an amenable number.

228472172 is a deficient number, since it is larger than the sum of its proper divisors (181106284).

228472172 is a wasteful number, since it uses less digits than its factorization.

228472172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393168 (or 1393166 counting only the distinct ones).

The product of its digits is 25088, while the sum is 35.

The square root of 228472172 is about 15115.2959613763. The cubic root of 228472172 is about 611.3329019113.

The spelling of 228472172 in words is "two hundred twenty-eight million, four hundred seventy-two thousand, one hundred seventy-two".