228969565472 has 18 divisors (see below), whose sum is σ = 450789161193. Its totient is φ = 114483429312.

The previous prime is 228969565469. The next prime is 228969565481. The reversal of 228969565472 is 274565969822.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 196855491856 + 32114073616 = 443684^2 + 179204^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=338356.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228969565399 and 228969565408.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2664554 + ... + 2749142.

Almost surely, 2^228969565472 is an apocalyptic number.

It is an amenable number.

228969565472 is a deficient number, since it is larger than the sum of its proper divisors (221819595721).

228969565472 is an frugal number, since it uses more digits than its factorization.

228969565472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169188 (or 84591 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 65.

The spelling of 228969565472 in words is "two hundred twenty-eight billion, nine hundred sixty-nine million, five hundred sixty-five thousand, four hundred seventy-two".