228365072 has 20 divisors (see below), whose sum is σ = 476492940. Its totient is φ = 105399168.

The previous prime is 228365051. The next prime is 228365087. The reversal of 228365072 is 270563822.

It can be written as a sum of positive squares in 2 ways, for example, as 39137536 + 189227536 = 6256^2 + 13756^2 .

It is a super-2 number, since 2×228365072² = 104301212219130368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548747 + ... + 549162.

It is an arithmetic number, because the mean of its divisors is an integer number (23824647).

Almost surely, 2^228365072 is an apocalyptic number.

It is an amenable number.

228365072 is an abundant number, since it is smaller than the sum of its proper divisors (248127868).

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

228365072 is a wasteful number, since it uses less digits than its factorization.

228365072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097930 (or 1097924 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 228365072 is about 15111.7527772261. The cubic root of 228365072 is about 611.2373629426.

The spelling of 228365072 in words is "two hundred twenty-eight million, three hundred sixty-five thousand, seventy-two".