23023638 has 72 divisors (see below), whose sum is σ = 56696328. Its totient is φ = 6751800.

The previous prime is 23023633. The next prime is 23023639. The reversal of 23023638 is 83632032.

23023638 is a `hidden beast` number, since 2 + 3 + 0 + 23 + 638 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23023633) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 742683 + ... + 742713.

It is an arithmetic number, because the mean of its divisors is an integer number (787449).

Almost surely, 2^23023638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23023638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28348164).

23023638 is an abundant number, since it is smaller than the sum of its proper divisors (33672690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23023638 is a wasteful number, since it uses less digits than its factorization.

23023638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 23023638 is about 4798.2953222994. The cubic root of 23023638 is about 284.4840897409.

The spelling of 23023638 in words is "twenty-three million, twenty-three thousand, six hundred thirty-eight".