23642638 has 8 divisors (see below), whose sum is σ = 35723232. Its totient is φ = 11734896.

The previous prime is 23642629. The next prime is 23642639. The reversal of 23642638 is 83624632.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23642639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42870 + ... + 43417.

It is an arithmetic number, because the mean of its divisors is an integer number (4465404).

Almost surely, 2^23642638 is an apocalyptic number.

23642638 is a deficient number, since it is larger than the sum of its proper divisors (12080594).

23642638 is a wasteful number, since it uses less digits than its factorization.

23642638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86426.

The product of its digits is 41472, while the sum is 34.

The square root of 23642638 is about 4862.3695869401. The cubic root of 23642638 is about 287.0110676530.

The spelling of 23642638 in words is "twenty-three million, six hundred forty-two thousand, six hundred thirty-eight".