23420638 has 8 divisors (see below), whose sum is σ = 35948088. Its totient is φ = 11437944.

The previous prime is 23420629. The next prime is 23420641. The reversal of 23420638 is 83602432.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136081 + ... + 136252.

It is an arithmetic number, because the mean of its divisors is an integer number (4493511).

Almost surely, 2^23420638 is an apocalyptic number.

23420638 is a deficient number, since it is larger than the sum of its proper divisors (12527450).

23420638 is a wasteful number, since it uses less digits than its factorization.

23420638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272378.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 23420638 is about 4839.4873695465. The cubic root of 23420638 is about 286.1099142299.

The spelling of 23420638 in words is "twenty-three million, four hundred twenty thousand, six hundred thirty-eight".