11723745 has 32 divisors (see below), whose sum is σ = 20974464. Its totient is φ = 5542400.

The previous prime is 11723737. The next prime is 11723749. The reversal of 11723745 is 54732711.

It is not a de Polignac number, because 11723745 - 2³ = 11723737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11723749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5899 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (655452).

Almost surely, 2^11723745 is an apocalyptic number.

11723745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11723745 is a deficient number, since it is larger than the sum of its proper divisors (9250719).

11723745 is a wasteful number, since it uses less digits than its factorization.

11723745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793.

The product of its digits is 5880, while the sum is 30.

The square root of 11723745 is about 3423.9954731278. The cubic root of 11723745 is about 227.1723415816.

The spelling of 11723745 in words is "eleven million, seven hundred twenty-three thousand, seven hundred forty-five".