11013980 has 24 divisors (see below), whose sum is σ = 23623488. Its totient is φ = 4311488.

The previous prime is 11013979. The next prime is 11014001. The reversal of 11013980 is 8931011.

It is a congruent number.

It is an unprimeable number.

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, 4919 + ... + 6798.

It is an arithmetic number, because the mean of its divisors is an integer number (984312).

Almost surely, 2^11013980 is an apocalyptic number.

11013980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11013980 is an abundant number, since it is smaller than the sum of its proper divisors (12609508).

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

11013980 is a wasteful number, since it uses less digits than its factorization.

11013980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11773 (or 11771 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 11013980 is about 3318.7316854485. The cubic root of 11013980 is about 222.4921850557.

Adding to 11013980 its reverse (8931011), we get a palindrome (19944991).

The spelling of 11013980 in words is "eleven million, thirteen thousand, nine hundred eighty".