228390888 has 192 divisors, whose sum is σ = 674150400. Its totient is φ = 64310400.

The previous prime is 228390881. The next prime is 228390901. The reversal of 228390888 is 888093822.

228390888 is digitally balanced in base 3, 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 (228390881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3871003 + ... + 3871061.

It is an arithmetic number, because the mean of its divisors is an integer number (3511200).

Almost surely, 2^228390888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228390888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337075200).

228390888 is an abundant number, since it is smaller than the sum of its proper divisors (445759512).

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

228390888 is a wasteful number, since it uses less digits than its factorization.

228390888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 228390888 is about 15112.6069226987. The cubic root of 228390888 is about 611.2603949370.

The spelling of 228390888 in words is "two hundred twenty-eight million, three hundred ninety thousand, eight hundred eighty-eight".