228157872 has 20 divisors (see below), whose sum is σ = 589407960. Its totient is φ = 76052608.

The previous prime is 228157859. The next prime is 228157879. The reversal of 228157872 is 278751822.

228157872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228157879) 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, 2376597 + ... + 2376692.

It is an arithmetic number, because the mean of its divisors is an integer number (29470398).

Almost surely, 2^228157872 is an apocalyptic number.

It is an amenable number.

228157872 is an abundant number, since it is smaller than the sum of its proper divisors (361250088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228157872 is a wasteful number, since it uses less digits than its factorization.

228157872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4753300 (or 4753294 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 228157872 is about 15104.8956302253. The cubic root of 228157872 is about 611.0524445525.

The spelling of 228157872 in words is "two hundred twenty-eight million, one hundred fifty-seven thousand, eight hundred seventy-two".