11856980 has 12 divisors (see below), whose sum is σ = 24899700. Its totient is φ = 4742784.

The previous prime is 11856979. The next prime is 11857003. The reversal of 11856980 is 8965811.

11856980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8773444 + 3083536 = 2962^2 + 1756^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296405 + ... + 296444.

It is an arithmetic number, because the mean of its divisors is an integer number (2074975).

Almost surely, 2^11856980 is an apocalyptic number.

11856980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11856980 is an abundant number, since it is smaller than the sum of its proper divisors (13042720).

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

11856980 is a wasteful number, since it uses less digits than its factorization.

11856980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592858 (or 592856 counting only the distinct ones).

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

The square root of 11856980 is about 3443.3965789610. The cubic root of 11856980 is about 228.0296719360.

The spelling of 11856980 in words is "eleven million, eight hundred fifty-six thousand, nine hundred eighty".