228901872 has 120 divisors (see below), whose sum is σ = 650962800. Its totient is φ = 69214208.

The previous prime is 228901847. The next prime is 228901877. The reversal of 228901872 is 278109822.

228901872 is digitally balanced in base 2, 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 228901872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228901877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 402004 + ... + 402572.

It is an arithmetic number, because the mean of its divisors is an integer number (5424690).

Almost surely, 2^228901872 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 228901872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325481400).

228901872 is an abundant number, since it is smaller than the sum of its proper divisors (422060928).

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

228901872 is a wasteful number, since it uses less digits than its factorization.

228901872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 228901872 is about 15129.5033626355. The cubic root of 228901872 is about 611.7159175357.

The spelling of 228901872 in words is "two hundred twenty-eight million, nine hundred one thousand, eight hundred seventy-two".