23443745 has 16 divisors (see below), whose sum is σ = 31343760. Its totient is φ = 16713984.

The previous prime is 23443733. The next prime is 23443747. The reversal of 23443745 is 54734432.

It can be written as a sum of positive squares in 8 ways, for example, as 6436369 + 17007376 = 2537^2 + 4124^2 .

It is a cyclic number.

It is not a de Polignac number, because 23443745 - 2⁸ = 23443489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23443747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4334 + ... + 8103.

It is an arithmetic number, because the mean of its divisors is an integer number (1958985).

Almost surely, 2^23443745 is an apocalyptic number.

It is an amenable number.

23443745 is a deficient number, since it is larger than the sum of its proper divisors (7900015).

23443745 is a wasteful number, since it uses less digits than its factorization.

23443745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12484.

The product of its digits is 40320, while the sum is 32.

The square root of 23443745 is about 4841.8741206273. The cubic root of 23443745 is about 286.2039761249.

The spelling of 23443745 in words is "twenty-three million, four hundred forty-three thousand, seven hundred forty-five".