228249888 has 144 divisors (see below), whose sum is σ = 671519520. Its totient is φ = 67682304.

The previous prime is 228249887. The next prime is 228249893. The reversal of 228249888 is 888942822.

It is a happy number.

It is a super-2 number, since 2×228249888² = 104196022744025088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 228249888.

It is not an unprimeable number, because it can be changed into a prime (228249887) 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, 526920 + ... + 527352.

It is an arithmetic number, because the mean of its divisors is an integer number (4663330).

Almost surely, 2^228249888 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 228249888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335759760).

228249888 is an abundant number, since it is smaller than the sum of its proper divisors (443269632).

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

228249888 is a wasteful number, since it uses less digits than its factorization.

228249888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 474 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 51.

The square root of 228249888 is about 15107.9412230787. The cubic root of 228249888 is about 611.1345792665.

The spelling of 228249888 in words is "two hundred twenty-eight million, two hundred forty-nine thousand, eight hundred eighty-eight".