11481980 has 12 divisors (see below), whose sum is σ = 24112200. Its totient is φ = 4592784.

The previous prime is 11481961. The next prime is 11482001. The reversal of 11481980 is 8918411.

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, 287030 + ... + 287069.

It is an arithmetic number, because the mean of its divisors is an integer number (2009350).

Almost surely, 2^11481980 is an apocalyptic number.

11481980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11481980 is an abundant number, since it is smaller than the sum of its proper divisors (12630220).

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

11481980 is a wasteful number, since it uses less digits than its factorization.

11481980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574108 (or 574106 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 11481980 is about 3388.5070458832. The cubic root of 11481980 is about 225.5999134433.

The spelling of 11481980 in words is "eleven million, four hundred eighty-one thousand, nine hundred eighty".