115428428 has 12 divisors (see below), whose sum is σ = 206297952. Its totient is φ = 56486160.

The previous prime is 115428413. The next prime is 115428431. The reversal of 115428428 is 824824511.

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, 306803 + ... + 307178.

It is an arithmetic number, because the mean of its divisors is an integer number (17191496).

Almost surely, 2^115428428 is an apocalyptic number.

It is an amenable number.

115428428 is a deficient number, since it is larger than the sum of its proper divisors (90869524).

115428428 is a wasteful number, since it uses less digits than its factorization.

115428428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614032 (or 614030 counting only the distinct ones).

The product of its digits is 20480, while the sum is 35.

The square root of 115428428 is about 10743.7622832972. The cubic root of 115428428 is about 486.8975550036.

The spelling of 115428428 in words is "one hundred fifteen million, four hundred twenty-eight thousand, four hundred twenty-eight".