228979637188 has 24 divisors (see below), whose sum is σ = 424013022720. Its totient is φ = 107896157280.

The previous prime is 228979637171. The next prime is 228979637197. The reversal of 228979637188 is 881736979822.

It is a super-2 number, since 2×228979637188² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7872631 + ... + 7901662.

It is an arithmetic number, because the mean of its divisors is an integer number (17667209280).

Almost surely, 2^228979637188 is an apocalyptic number.

It is an amenable number.

228979637188 is a deficient number, since it is larger than the sum of its proper divisors (195033385532).

228979637188 is a wasteful number, since it uses less digits than its factorization.

228979637188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15774507 (or 15774505 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 70.

The spelling of 228979637188 in words is "two hundred twenty-eight billion, nine hundred seventy-nine million, six hundred thirty-seven thousand, one hundred eighty-eight".