11658980 has 12 divisors (see below), whose sum is σ = 24483900. Its totient is φ = 4663584.

The previous prime is 11658979. The next prime is 11659003. The reversal of 11658980 is 8985611.

It can be written as a sum of positive squares in 2 ways, for example, as 7365796 + 4293184 = 2714^2 + 2072^2 .

It is an unprimeable number.

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, 291455 + ... + 291494.

It is an arithmetic number, because the mean of its divisors is an integer number (2040325).

Almost surely, 2^11658980 is an apocalyptic number.

11658980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11658980 is an abundant number, since it is smaller than the sum of its proper divisors (12824920).

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

11658980 is a wasteful number, since it uses less digits than its factorization.

11658980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582958 (or 582956 counting only the distinct ones).

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

The square root of 11658980 is about 3414.5248571361. The cubic root of 11658980 is about 226.7532493141.

The spelling of 11658980 in words is "eleven million, six hundred fifty-eight thousand, nine hundred eighty".