228172892 has 6 divisors (see below), whose sum is σ = 399302568. Its totient is φ = 114086444.

The previous prime is 228172891. The next prime is 228172907. The reversal of 228172892 is 298271822.

228172892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228172891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28521608 + ... + 28521615.

It is an arithmetic number, because the mean of its divisors is an integer number (66550428).

Almost surely, 2^228172892 is an apocalyptic number.

It is an amenable number.

228172892 is a deficient number, since it is larger than the sum of its proper divisors (171129676).

228172892 is a wasteful number, since it uses less digits than its factorization.

228172892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57043227 (or 57043225 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 228172892 is about 15105.3928118404. The cubic root of 228172892 is about 611.0658531136.

The spelling of 228172892 in words is "two hundred twenty-eight million, one hundred seventy-two thousand, eight hundred ninety-two".