228945528 has 160 divisors (see below), whose sum is σ = 776239200. Its totient is φ = 61544448.

The previous prime is 228945523. The next prime is 228945553. The reversal of 228945528 is 825549822.

228945528 is a `hidden beast` number, since 2 + 2 + 8 + 94 + 552 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228945523) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 75628 + ... + 78596.

It is an arithmetic number, because the mean of its divisors is an integer number (4851495).

Almost surely, 2^228945528 is an apocalyptic number.

228945528 is a gapful number since it is divisible by the number (28) 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 228945528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388119600).

228945528 is an abundant number, since it is smaller than the sum of its proper divisors (547293672).

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

228945528 is a wasteful number, since it uses less digits than its factorization.

228945528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011 (or 2998 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 228945528 is about 15130.9460378391. The cubic root of 228945528 is about 611.7548037366.

The spelling of 228945528 in words is "two hundred twenty-eight million, nine hundred forty-five thousand, five hundred twenty-eight".