23642945 has 8 divisors (see below), whose sum is σ = 28486080. Its totient is φ = 18838000.

The previous prime is 23642933. The next prime is 23642947. The reversal of 23642945 is 54924632.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-23642945 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23642947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8165 + ... + 10674.

It is an arithmetic number, because the mean of its divisors is an integer number (3560760).

Almost surely, 2^23642945 is an apocalyptic number.

It is an amenable number.

23642945 is a deficient number, since it is larger than the sum of its proper divisors (4843135).

23642945 is a wasteful number, since it uses less digits than its factorization.

23642945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19095.

The product of its digits is 51840, while the sum is 35.

The square root of 23642945 is about 4862.4011558077. The cubic root of 23642945 is about 287.0123099286.

The spelling of 23642945 in words is "twenty-three million, six hundred forty-two thousand, nine hundred forty-five".