11553980 has 24 divisors (see below), whose sum is σ = 24539760. Its totient is φ = 4568960.

The previous prime is 11553943. The next prime is 11553989. The reversal of 11553980 is 8935511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11553989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466 + ... + 5025.

It is an arithmetic number, because the mean of its divisors is an integer number (1022490).

Almost surely, 2^11553980 is an apocalyptic number.

11553980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11553980 is an abundant number, since it is smaller than the sum of its proper divisors (12985780).

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

11553980 is a wasteful number, since it uses less digits than its factorization.

11553980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6589 (or 6587 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 11553980 is about 3399.1145905956. The cubic root of 11553980 is about 226.0704873198.

The spelling of 11553980 in words is "eleven million, five hundred fifty-three thousand, nine hundred eighty".