11965880 has 16 divisors (see below), whose sum is σ = 26923320. Its totient is φ = 4786336.

The previous prime is 11965879. The next prime is 11965883. The reversal of 11965880 is 8856911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11965883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149534 + ... + 149613.

Almost surely, 2^11965880 is an apocalyptic number.

11965880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11965880 is an abundant number, since it is smaller than the sum of its proper divisors (14957440).

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

11965880 is a wasteful number, since it uses less digits than its factorization.

11965880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299158 (or 299154 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 11965880 is about 3459.1733116454. The cubic root of 11965880 is about 228.7256555856.

The spelling of 11965880 in words is "eleven million, nine hundred sixty-five thousand, eight hundred eighty".