11812915 has 16 divisors (see below), whose sum is σ = 14918400. Its totient is φ = 8962272.

The previous prime is 11812903. The next prime is 11812919. The reversal of 11812915 is 51921811.

It is not a de Polignac number, because 11812915 - 2⁵ = 11812883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11812919) 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, 15616 + ... + 16354.

It is an arithmetic number, because the mean of its divisors is an integer number (932400).

Almost surely, 2^11812915 is an apocalyptic number.

11812915 is a deficient number, since it is larger than the sum of its proper divisors (3105485).

11812915 is a wasteful number, since it uses less digits than its factorization.

11812915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906.

The product of its digits is 720, while the sum is 28.

The square root of 11812915 is about 3436.9921443029. The cubic root of 11812915 is about 227.7468399164.

It can be divided in two parts, 1181 and 2915, that added together give a 12-th power (4096 = 2¹²).

The spelling of 11812915 in words is "eleven million, eight hundred twelve thousand, nine hundred fifteen".