11491180 has 24 divisors (see below), whose sum is σ = 24529680. Its totient is φ = 4520640.

The previous prime is 11491177. The next prime is 11491187. The reversal of 11491180 is 8119411.

It is not an unprimeable number, because it can be changed into a prime (11491187) 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, 3490 + ... + 5929.

It is an arithmetic number, because the mean of its divisors is an integer number (1022070).

Almost surely, 2^11491180 is an apocalyptic number.

11491180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11491180 is an abundant number, since it is smaller than the sum of its proper divisors (13038500).

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

11491180 is a wasteful number, since it uses less digits than its factorization.

11491180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489 (or 9487 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 11491180 is about 3389.8643040688. The cubic root of 11491180 is about 225.6601517503.

It can be divided in two parts, 114 and 91180, that multiplied together give a triangular number (10394520 = T₄₅₅₉).

The spelling of 11491180 in words is "eleven million, four hundred ninety-one thousand, one hundred eighty".