11269980 has 144 divisors (see below), whose sum is σ = 37739520. Its totient is φ = 2709504.

The previous prime is 11269969. The next prime is 11269987. The reversal of 11269980 is 8996211.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11269987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88677 + ... + 88803.

It is an arithmetic number, because the mean of its divisors is an integer number (262080).

Almost surely, 2^11269980 is an apocalyptic number.

11269980 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 11269980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18869760).

11269980 is an abundant number, since it is smaller than the sum of its proper divisors (26469540).

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

11269980 is a wasteful number, since it uses less digits than its factorization.

11269980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 11269980 is about 3357.0790875402. The cubic root of 11269980 is about 224.2028084572.

The spelling of 11269980 in words is "eleven million, two hundred sixty-nine thousand, nine hundred eighty".