23305806 has 40 divisors (see below), whose sum is σ = 52507224. Its totient is φ = 7726320.

The previous prime is 23305801. The next prime is 23305811. The reversal of 23305806 is 60850332.

It is an interprime number because it is at equal distance from previous prime (23305801) and next prime (23305811).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 23305806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23305801) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47221 + ... + 47711.

Almost surely, 2^23305806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23305806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26253612).

23305806 is an abundant number, since it is smaller than the sum of its proper divisors (29201418).

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

23305806 is a wasteful number, since it uses less digits than its factorization.

23305806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 23305806 is about 4827.6087248243. The cubic root of 23305806 is about 285.6415464593.

The spelling of 23305806 in words is "twenty-three million, three hundred five thousand, eight hundred six".