23204745 has 32 divisors (see below), whose sum is σ = 43683840. Its totient is φ = 11646720.

The previous prime is 23204737. The next prime is 23204761. The reversal of 23204745 is 54740232.

It is not a de Polignac number, because 23204745 - 2³ = 23204737 is a prime.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2761 + ... + 7350.

It is an arithmetic number, because the mean of its divisors is an integer number (1365120).

Almost surely, 2^23204745 is an apocalyptic number.

It is an amenable number.

23204745 is a deficient number, since it is larger than the sum of its proper divisors (20479095).

23204745 is a wasteful number, since it uses less digits than its factorization.

23204745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10142 (or 10136 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 23204745 is about 4817.1303698364. The cubic root of 23204745 is about 285.2280722833.

Adding to 23204745 its reverse (54740232), we get a palindrome (77944977).

The spelling of 23204745 in words is "twenty-three million, two hundred four thousand, seven hundred forty-five".