11090980 has 24 divisors (see below), whose sum is σ = 23535288. Its totient is φ = 4389888.

The previous prime is 11090977. The next prime is 11090983. The reversal of 11090980 is 8909011.

It is an interprime number because it is at equal distance from previous prime (11090977) and next prime (11090983).

It can be written as a sum of positive squares in 4 ways, for example, as 1218816 + 9872164 = 1104^2 + 3142^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11090983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919 + ... + 4798.

It is an arithmetic number, because the mean of its divisors is an integer number (980637).

Almost surely, 2^11090980 is an apocalyptic number.

11090980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11090980 is an abundant number, since it is smaller than the sum of its proper divisors (12444308).

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

11090980 is a wasteful number, since it uses less digits than its factorization.

11090980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5823 (or 5821 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 11090980 is about 3330.3122976682. The cubic root of 11090980 is about 223.0094709324.

Adding to 11090980 its reverse (8909011), we get a palindrome (19999991).

The spelling of 11090980 in words is "eleven million, ninety thousand, nine hundred eighty".