115187887 has 8 divisors (see below), whose sum is σ = 121365504. Its totient is φ = 109107768.

The previous prime is 115187881. The next prime is 115187911. The reversal of 115187887 is 788781511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115187887 - 2³ = 115187879 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 (115187881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21943 + ... + 26680.

It is an arithmetic number, because the mean of its divisors is an integer number (15170688).

Almost surely, 2^115187887 is an apocalyptic number.

115187887 is a deficient number, since it is larger than the sum of its proper divisors (6177617).

115187887 is a wasteful number, since it uses less digits than its factorization.

115187887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48749.

The product of its digits is 125440, while the sum is 46.

The square root of 115187887 is about 10732.5619960939. The cubic root of 115187887 is about 486.5591049479.

The spelling of 115187887 in words is "one hundred fifteen million, one hundred eighty-seven thousand, eight hundred eighty-seven".