11280980 has 12 divisors (see below), whose sum is σ = 23690100. Its totient is φ = 4512384.

The previous prime is 11280953. The next prime is 11280989. The reversal of 11280980 is 8908211.

It can be written as a sum of positive squares in 2 ways, for example, as 3147076 + 8133904 = 1774^2 + 2852^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11280989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282005 + ... + 282044.

It is an arithmetic number, because the mean of its divisors is an integer number (1974175).

Almost surely, 2^11280980 is an apocalyptic number.

11280980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11280980 is an abundant number, since it is smaller than the sum of its proper divisors (12409120).

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

11280980 is a wasteful number, since it uses less digits than its factorization.

11280980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564058 (or 564056 counting only the distinct ones).

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

The square root of 11280980 is about 3358.7170169575. The cubic root of 11280980 is about 224.2757286973.

The spelling of 11280980 in words is "eleven million, two hundred eighty thousand, nine hundred eighty".