23808420 has 72 divisors (see below), whose sum is σ = 74725560. Its totient is φ = 6128640.

The previous prime is 23808419. The next prime is 23808437. The reversal of 23808420 is 2480832.

23808420 is a `hidden beast` number, since 238 + 0 + 8 + 420 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1454436 + 22353984 = 1206^2 + 4728^2 .

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, 2940 + ... + 7500.

It is an arithmetic number, because the mean of its divisors is an integer number (1037855).

Almost surely, 2^23808420 is an apocalyptic number.

23808420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23808420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37362780).

23808420 is an abundant number, since it is smaller than the sum of its proper divisors (50917140).

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

23808420 is a wasteful number, since it uses less digits than its factorization.

23808420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4605 (or 4600 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 23808420 is about 4879.3872566133. The cubic root of 23808420 is about 287.6803455747.

The spelling of 23808420 in words is "twenty-three million, eight hundred eight thousand, four hundred twenty".