11915616 has 24 divisors (see below), whose sum is σ = 31278744. Its totient is φ = 3971840.

The previous prime is 11915611. The next prime is 11915639. The reversal of 11915616 is 61651911.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11915611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61965 + ... + 62156.

It is an arithmetic number, because the mean of its divisors is an integer number (1303281).

Almost surely, 2^11915616 is an apocalyptic number.

11915616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11915616 is an abundant number, since it is smaller than the sum of its proper divisors (19363128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11915616 is a wasteful number, since it uses less digits than its factorization.

11915616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124134 (or 124126 counting only the distinct ones).

The product of its digits is 1620, while the sum is 30.

The square root of 11915616 is about 3451.9003461861. The cubic root of 11915616 is about 228.4049436475.

The spelling of 11915616 in words is "eleven million, nine hundred fifteen thousand, six hundred sixteen".