115428537 has 16 divisors (see below), whose sum is σ = 195434880. Its totient is φ = 65959056.

The previous prime is 115428527. The next prime is 115428539. The reversal of 115428537 is 735824511.

115428537 is a `hidden beast` number, since 1 + 1 + 542 + 85 + 37 = 666.

It is not a de Polignac number, because 115428537 - 2⁸ = 115428281 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (115428539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305178 + ... + 305555.

It is an arithmetic number, because the mean of its divisors is an integer number (12214680).

Almost surely, 2^115428537 is an apocalyptic number.

It is an amenable number.

115428537 is a deficient number, since it is larger than the sum of its proper divisors (80006343).

115428537 is an equidigital number, since it uses as much as digits as its factorization.

115428537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610749 (or 610743 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 115428537 is about 10743.7673560069. The cubic root of 115428537 is about 486.8977082639.

The spelling of 115428537 in words is "one hundred fifteen million, four hundred twenty-eight thousand, five hundred thirty-seven".