23855740 has 48 divisors (see below), whose sum is σ = 52335360. Its totient is φ = 9123840.

The previous prime is 23855737. The next prime is 23855747. The reversal of 23855740 is 4755832.

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 23855696 and 23855705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23855747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67404 + ... + 67756.

It is an arithmetic number, because the mean of its divisors is an integer number (1090320).

Almost surely, 2^23855740 is an apocalyptic number.

23855740 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 23855740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26167680).

23855740 is an abundant number, since it is smaller than the sum of its proper divisors (28479620).

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

23855740 is a wasteful number, since it uses less digits than its factorization.

23855740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 23855740 is about 4884.2338191368. The cubic root of 23855740 is about 287.8708107563.

The spelling of 23855740 in words is "twenty-three million, eight hundred fifty-five thousand, seven hundred forty".