11125780 has 12 divisors (see below), whose sum is σ = 23364180. Its totient is φ = 4450304.

The previous prime is 11125757. The next prime is 11125781. The reversal of 11125780 is 8752111.

It can be written as a sum of positive squares in 2 ways, for example, as 3218436 + 7907344 = 1794^2 + 2812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11125781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278125 + ... + 278164.

It is an arithmetic number, because the mean of its divisors is an integer number (1947015).

Almost surely, 2^11125780 is an apocalyptic number.

11125780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11125780 is an abundant number, since it is smaller than the sum of its proper divisors (12238400).

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

11125780 is a wasteful number, since it uses less digits than its factorization.

11125780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556298 (or 556296 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 11125780 is about 3335.5329409256. The cubic root of 11125780 is about 223.2424718875.

Adding to 11125780 its reverse (8752111), we get a palindrome (19877891).

The spelling of 11125780 in words is "eleven million, one hundred twenty-five thousand, seven hundred eighty".