11691080 has 32 divisors (see below), whose sum is σ = 27691200. Its totient is φ = 4430016.

The previous prime is 11691079. The next prime is 11691083. The reversal of 11691080 is 8019611.

It is not an unprimeable number, because it can be changed into a prime (11691083) 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, 6932 + ... + 8451.

It is an arithmetic number, because the mean of its divisors is an integer number (865350).

Almost surely, 2^11691080 is an apocalyptic number.

11691080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11691080 is an abundant number, since it is smaller than the sum of its proper divisors (16000120).

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

11691080 is a wasteful number, since it uses less digits than its factorization.

11691080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15413 (or 15409 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 11691080 is about 3419.2221337608. Note that the first 3 decimals coincide. The cubic root of 11691080 is about 226.9611608530.

The spelling of 11691080 in words is "eleven million, six hundred ninety-one thousand, eighty".