11123980 has 36 divisors (see below), whose sum is σ = 27176688. Its totient is φ = 3813600.

The previous prime is 11123963. The next prime is 11124053. The reversal of 11123980 is 8932111.

11123980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4696 + ... + 6655.

It is an arithmetic number, because the mean of its divisors is an integer number (754908).

Almost surely, 2^11123980 is an apocalyptic number.

11123980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123980 is an abundant number, since it is smaller than the sum of its proper divisors (16052708).

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

11123980 is a wasteful number, since it uses less digits than its factorization.

11123980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11374 (or 11365 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 11123980 is about 3335.2631080621. The cubic root of 11123980 is about 223.2304320389.

The spelling of 11123980 in words is "eleven million, one hundred twenty-three thousand, nine hundred eighty".