23320638 has 48 divisors (see below), whose sum is σ = 58032000. Its totient is φ = 6693840.

The previous prime is 23320613. The next prime is 23320667. The reversal of 23320638 is 83602332.

23320638 is a `hidden beast` number, since 2 + 3 + 3 + 20 + 638 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 663 + ... + 6861.

It is an arithmetic number, because the mean of its divisors is an integer number (1209000).

Almost surely, 2^23320638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23320638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29016000).

23320638 is an abundant number, since it is smaller than the sum of its proper divisors (34711362).

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

23320638 is a wasteful number, since it uses less digits than its factorization.

23320638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6237 (or 6234 counting only the distinct ones).

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

The square root of 23320638 is about 4829.1446447585. The cubic root of 23320638 is about 285.7021284589.

The spelling of 23320638 in words is "twenty-three million, three hundred twenty thousand, six hundred thirty-eight".