11980280 has 32 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 4423296.

The previous prime is 11980261. The next prime is 11980301. The reversal of 11980280 is 8208911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11000 + ... + 12039.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^11980280 is an apocalyptic number.

11980280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11980280 is an abundant number, since it is smaller than the sum of its proper divisors (17050120).

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

11980280 is a wasteful number, since it uses less digits than its factorization.

11980280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23063 (or 23059 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 11980280 is about 3461.2541079788. The cubic root of 11980280 is about 228.8173699464.

The spelling of 11980280 in words is "eleven million, nine hundred eighty thousand, two hundred eighty".