23000638 has 4 divisors (see below), whose sum is σ = 34500960. Its totient is φ = 11500318.

The previous prime is 23000633. The next prime is 23000639. The reversal of 23000638 is 83600032.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23000633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5750158 + ... + 5750161.

It is an arithmetic number, because the mean of its divisors is an integer number (8625240).

Almost surely, 2^23000638 is an apocalyptic number.

23000638 is a deficient number, since it is larger than the sum of its proper divisors (11500322).

23000638 is a wasteful number, since it uses less digits than its factorization.

23000638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500321.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 23000638 is about 4795.8980389495. The cubic root of 23000638 is about 284.3893275074.

The spelling of 23000638 in words is "twenty-three million, six hundred thirty-eight", and thus it is an aban number.