23004945 has 64 divisors (see below), whose sum is σ = 44236800. Its totient is φ = 11309760.

The previous prime is 23004941. The next prime is 23004967. The reversal of 23004945 is 54940032.

It is not a de Polignac number, because 23004945 - 2² = 23004941 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23004941) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96136 + ... + 96374.

It is an arithmetic number, because the mean of its divisors is an integer number (691200).

Almost surely, 2^23004945 is an apocalyptic number.

It is an amenable number.

23004945 is a deficient number, since it is larger than the sum of its proper divisors (21231855).

23004945 is a wasteful number, since it uses less digits than its factorization.

23004945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 23004945 is about 4796.3470474935. The cubic root of 23004945 is about 284.4070775714.

Adding to 23004945 its reverse (54940032), we get a palindrome (77944977).

The spelling of 23004945 in words is "twenty-three million, four thousand, nine hundred forty-five".