115428775 has 48 divisors (see below), whose sum is σ = 181559808. Its totient is φ = 70704000.

The previous prime is 115428773. The next prime is 115428791. The reversal of 115428775 is 577824511.

It is not a de Polignac number, because 115428775 - 2¹ = 115428773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115428773) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116934 + ... + 117916.

It is an arithmetic number, because the mean of its divisors is an integer number (3782496).

Almost surely, 2^115428775 is an apocalyptic number.

115428775 is a deficient number, since it is larger than the sum of its proper divisors (66131033).

115428775 is a wasteful number, since it uses less digits than its factorization.

115428775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1067 counting only the distinct ones).

The product of its digits is 78400, while the sum is 40.

The square root of 115428775 is about 10743.7784321904. The cubic root of 115428775 is about 486.8980429056.

It can be divided in two parts, 1154 and 28775, that added together give a square (29929 = 173²).

The spelling of 115428775 in words is "one hundred fifteen million, four hundred twenty-eight thousand, seven hundred seventy-five".