11012980 has 48 divisors (see below), whose sum is σ = 25510464. Its totient is φ = 3960320.

The previous prime is 11012971. The next prime is 11013017. The reversal of 11012980 is 8921011.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 24639 + ... + 25081.

It is an arithmetic number, because the mean of its divisors is an integer number (531468).

Almost surely, 2^11012980 is an apocalyptic number.

11012980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11012980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12755232).

11012980 is an abundant number, since it is smaller than the sum of its proper divisors (14497484).

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

11012980 is a wasteful number, since it uses less digits than its factorization.

11012980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 11012980 is about 3318.5810220635. The cubic root of 11012980 is about 222.4854512223.

Adding to 11012980 its reverse (8921011), we get a palindrome (19933991).

The spelling of 11012980 in words is "eleven million, twelve thousand, nine hundred eighty".