23129808 has 80 divisors (see below), whose sum is σ = 65162496. Its totient is φ = 7027200.

The previous prime is 23129803. The next prime is 23129819. The reversal of 23129808 is 80892132.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23129803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62841 + ... + 63207.

Almost surely, 2^23129808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23129808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32581248).

23129808 is an abundant number, since it is smaller than the sum of its proper divisors (42032688).

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

23129808 is a wasteful number, since it uses less digits than its factorization.

23129808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 23129808 is about 4809.3459014714. The cubic root of 23129808 is about 284.9207043169.

The spelling of 23129808 in words is "twenty-three million, one hundred twenty-nine thousand, eight hundred eight".