228615402056 has 32 divisors (see below), whose sum is σ = 447393958200. Its totient is φ = 109415554560.

The previous prime is 228615402053. The next prime is 228615402061. The reversal of 228615402056 is 650204516822.

It can be written as a sum of positive squares in 4 ways, for example, as 133422172900 + 95193229156 = 365270^2 + 308534^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (228615402053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6558071 + ... + 6592838.

Almost surely, 2^228615402056 is an apocalyptic number.

It is an amenable number.

228615402056 is a deficient number, since it is larger than the sum of its proper divisors (218778556144).

228615402056 is a wasteful number, since it uses less digits than its factorization.

228615402056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13151009 (or 13151005 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

Adding to 228615402056 its reverse (650204516822), we get a palindrome (878819918878).

The spelling of 228615402056 in words is "two hundred twenty-eight billion, six hundred fifteen million, four hundred two thousand, fifty-six".