23173749 has 32 divisors (see below), whose sum is σ = 36480000. Its totient is φ = 14498352.

The previous prime is 23173723. The next prime is 23173751. The reversal of 23173749 is 94737132.

It is not a de Polignac number, because 23173749 - 2⁷ = 23173621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23173049) 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, 101974 + ... + 102200.

It is an arithmetic number, because the mean of its divisors is an integer number (1140000).

Almost surely, 2^23173749 is an apocalyptic number.

It is an amenable number.

23173749 is a deficient number, since it is larger than the sum of its proper divisors (13306251).

23173749 is a wasteful number, since it uses less digits than its factorization.

23173749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 448 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 23173749 is about 4813.9120266162. The cubic root of 23173749 is about 285.1010168224.

The spelling of 23173749 in words is "twenty-three million, one hundred seventy-three thousand, seven hundred forty-nine".