228115872 has 96 divisors (see below), whose sum is σ = 673565760. Its totient is φ = 75098880.

The previous prime is 228115847. The next prime is 228115883. The reversal of 228115872 is 278511822.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 70122 + ... + 73302.

It is an arithmetic number, because the mean of its divisors is an integer number (7016310).

Almost surely, 2^228115872 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 228115872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336782880).

228115872 is an abundant number, since it is smaller than the sum of its proper divisors (445449888).

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

228115872 is a wasteful number, since it uses less digits than its factorization.

228115872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283 (or 3269 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 228115872 is about 15103.5052885084. The cubic root of 228115872 is about 611.0149474496.

The spelling of 228115872 in words is "two hundred twenty-eight million, one hundred fifteen thousand, eight hundred seventy-two".