11513745 has 20 divisors (see below), whose sum is σ = 20640180. Its totient is φ = 6140448.

The previous prime is 11513729. The next prime is 11513797. The reversal of 11513745 is 54731511.

It can be written as a sum of positive squares in 2 ways, for example, as 4028049 + 7485696 = 2007^2 + 2736^2 .

It is not a de Polignac number, because 11513745 - 2⁴ = 11513729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13810 + ... + 14619.

It is an arithmetic number, because the mean of its divisors is an integer number (1032009).

Almost surely, 2^11513745 is an apocalyptic number.

11513745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11513745 is a deficient number, since it is larger than the sum of its proper divisors (9126435).

11513745 is an equidigital number, since it uses as much as digits as its factorization.

11513745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28446 (or 28437 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 11513745 is about 3393.1909760578. The cubic root of 11513745 is about 225.8077632785.

The spelling of 11513745 in words is "eleven million, five hundred thirteen thousand, seven hundred forty-five".