115128651 has 16 divisors (see below), whose sum is σ = 167915520. Its totient is φ = 69585120.

The previous prime is 115128649. The next prime is 115128661. The reversal of 115128651 is 156821511.

It is not a de Polignac number, because 115128651 - 2¹ = 115128649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115128661) 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, 8085 + ... + 17193.

It is an arithmetic number, because the mean of its divisors is an integer number (10494720).

Almost surely, 2^115128651 is an apocalyptic number.

115128651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

115128651 is a deficient number, since it is larger than the sum of its proper divisors (52786869).

115128651 is a wasteful number, since it uses less digits than its factorization.

115128651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9506.

The product of its digits is 2400, while the sum is 30.

The square root of 115128651 is about 10729.8020019011. The cubic root of 115128651 is about 486.4756854209.

The spelling of 115128651 in words is "one hundred fifteen million, one hundred twenty-eight thousand, six hundred fifty-one".