228888840 has 64 divisors (see below), whose sum is σ = 687735360. Its totient is φ = 60942080.

The previous prime is 228888809. The next prime is 228888923. The reversal of 228888840 is 48888822.

228888840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 228888840.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111907 + ... + 113933.

It is an arithmetic number, because the mean of its divisors is an integer number (10745865).

Almost surely, 2^228888840 is an apocalyptic number.

228888840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228888840 is an abundant number, since it is smaller than the sum of its proper divisors (458846520).

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

228888840 is a wasteful number, since it uses less digits than its factorization.

228888840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982 (or 2978 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 48.

The square root of 228888840 is about 15129.0726748205. The cubic root of 228888840 is about 611.7043084372.

The spelling of 228888840 in words is "two hundred twenty-eight million, eight hundred eighty-eight thousand, eight hundred forty".