11129280 has 56 divisors (see below), whose sum is σ = 35338512. Its totient is φ = 2967552.

The previous prime is 11129273. The next prime is 11129297. The reversal of 11129280 is 8292111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 11129280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4837 + ... + 6756.

Almost surely, 2^11129280 is an apocalyptic number.

11129280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11129280 is an abundant number, since it is smaller than the sum of its proper divisors (24209232).

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

11129280 is a wasteful number, since it uses less digits than its factorization.

11129280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11613 (or 11603 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 11129280 is about 3336.0575534604. The cubic root of 11129280 is about 223.2658789874.

The spelling of 11129280 in words is "eleven million, one hundred twenty-nine thousand, two hundred eighty".