228658572 has 96 divisors (see below), whose sum is σ = 612541440. Its totient is φ = 73725120.

The previous prime is 228658531. The next prime is 228658583. The reversal of 228658572 is 275856822.

228658572 is a `hidden beast` number, since 2 + 28 + 6 + 58 + 572 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 542922 + ... + 543342.

It is an arithmetic number, because the mean of its divisors is an integer number (6380640).

Almost surely, 2^228658572 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 228658572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306270720).

228658572 is an abundant number, since it is smaller than the sum of its proper divisors (383882868).

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

228658572 is a wasteful number, since it uses less digits than its factorization.

228658572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 580 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 228658572 is about 15121.4606437341. The cubic root of 228658572 is about 611.4991095745.

The spelling of 228658572 in words is "two hundred twenty-eight million, six hundred fifty-eight thousand, five hundred seventy-two".