228918860 has 24 divisors (see below), whose sum is σ = 481115040. Its totient is φ = 91494144.

The previous prime is 228918817. The next prime is 228918871. The reversal of 228918860 is 68819822.

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, 25937 + ... + 33623.

It is an arithmetic number, because the mean of its divisors is an integer number (20046460).

Almost surely, 2^228918860 is an apocalyptic number.

228918860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228918860 is an abundant number, since it is smaller than the sum of its proper divisors (252196180).

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

228918860 is a wasteful number, since it uses less digits than its factorization.

228918860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9185 (or 9183 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 228918860 is about 15130.0647718376. The cubic root of 228918860 is about 611.7310500360.

The spelling of 228918860 in words is "two hundred twenty-eight million, nine hundred eighteen thousand, eight hundred sixty".