228889232 has 80 divisors (see below), whose sum is σ = 528716160. Its totient is φ = 94617600.

The previous prime is 228889231. The next prime is 228889247. The reversal of 228889232 is 232988822.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (228889231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161744 + ... + 163152.

It is an arithmetic number, because the mean of its divisors is an integer number (6608952).

Almost surely, 2^228889232 is an apocalyptic number.

228889232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228889232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264358080).

228889232 is an abundant number, since it is smaller than the sum of its proper divisors (299826928).

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

228889232 is a wasteful number, since it uses less digits than its factorization.

228889232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1506 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 228889232 is about 15129.0856300042. The cubic root of 228889232 is about 611.7046576431.

The spelling of 228889232 in words is "two hundred twenty-eight million, eight hundred eighty-nine thousand, two hundred thirty-two".