115128224 has 24 divisors (see below), whose sum is σ = 228321828. Its totient is φ = 57141760.

The previous prime is 115128217. The next prime is 115128241. The reversal of 115128224 is 422821511.

It can be written as a sum of positive squares in 2 ways, for example, as 104448400 + 10679824 = 10220^2 + 3268^2 .

It is a super-2 number, since 2×115128224² = 26509015922788352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115128193 and 115128202.

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, 8747 + ... + 17514.

Almost surely, 2^115128224 is an apocalyptic number.

It is an amenable number.

115128224 is a deficient number, since it is larger than the sum of its proper divisors (113193604).

115128224 is a wasteful number, since it uses less digits than its factorization.

115128224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26408 (or 26400 counting only the distinct ones).

The product of its digits is 1280, while the sum is 26.

The square root of 115128224 is about 10729.7821040317. The cubic root of 115128224 is about 486.4750839912.

Adding to 115128224 its reverse (422821511), we get a palindrome (537949735).

The spelling of 115128224 in words is "one hundred fifteen million, one hundred twenty-eight thousand, two hundred twenty-four".