11144980 has 48 divisors (see below), whose sum is σ = 29183616. Its totient is φ = 3473280.

The previous prime is 11144957. The next prime is 11145007. The reversal of 11144980 is 8944111.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2079 + ... + 5158.

It is an arithmetic number, because the mean of its divisors is an integer number (607992).

Almost surely, 2^11144980 is an apocalyptic number.

11144980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11144980 is an abundant number, since it is smaller than the sum of its proper divisors (18038636).

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

11144980 is a wasteful number, since it uses less digits than its factorization.

11144980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7264 (or 7262 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 11144980 is about 3338.4098010879. The cubic root of 11144980 is about 223.3708162131.

It can be divided in two parts, 11 and 144980, that added together give a triangular number (144991 = T₅₃₈).

The spelling of 11144980 in words is "eleven million, one hundred forty-four thousand, nine hundred eighty".