228628979 has 8 divisors (see below), whose sum is σ = 234168000. Its totient is φ = 223100136.

The previous prime is 228628969. The next prime is 228628987. The reversal of 228628979 is 979826822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228628979 - 2⁴ = 228628963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228628979.

It is not an unprimeable number, because it can be changed into a prime (228628969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62684 + ... + 66230.

It is an arithmetic number, because the mean of its divisors is an integer number (29271000).

Almost surely, 2^228628979 is an apocalyptic number.

228628979 is a deficient number, since it is larger than the sum of its proper divisors (5539021).

228628979 is a wasteful number, since it uses less digits than its factorization.

228628979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089.

The product of its digits is 1741824, while the sum is 53.

The square root of 228628979 is about 15120.4821021024. The cubic root of 228628979 is about 611.4727283580.

The spelling of 228628979 in words is "two hundred twenty-eight million, six hundred twenty-eight thousand, nine hundred seventy-nine".