11881916 has 24 divisors (see below), whose sum is σ = 22176000. Its totient is φ = 5554224.

The previous prime is 11881913. The next prime is 11881927. The reversal of 11881916 is 61918811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11881913) 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, 5015 + ... + 6993.

It is an arithmetic number, because the mean of its divisors is an integer number (924000).

Almost surely, 2^11881916 is an apocalyptic number.

It is an amenable number.

11881916 is a deficient number, since it is larger than the sum of its proper divisors (10294084).

11881916 is a wasteful number, since it uses less digits than its factorization.

11881916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081 (or 2079 counting only the distinct ones).

The product of its digits is 3456, while the sum is 35.

The square root of 11881916 is about 3447.0155207077. The cubic root of 11881916 is about 228.1894137488.

The spelling of 11881916 in words is "eleven million, eight hundred eighty-one thousand, nine hundred sixteen".