23425820 has 48 divisors (see below), whose sum is σ = 54014688. Its totient is φ = 8463360.

The previous prime is 23425781. The next prime is 23425849. The reversal of 23425820 is 2852432.

It is a self number, because there is not a number n which added to its sum of digits gives 23425820.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51032 + ... + 51488.

It is an arithmetic number, because the mean of its divisors is an integer number (1125306).

Almost surely, 2^23425820 is an apocalyptic number.

23425820 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 23425820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27007344).

23425820 is an abundant number, since it is smaller than the sum of its proper divisors (30588868).

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

23425820 is a wasteful number, since it uses less digits than its factorization.

23425820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 23425820 is about 4840.0227272194. The cubic root of 23425820 is about 286.1310140286.

The spelling of 23425820 in words is "twenty-three million, four hundred twenty-five thousand, eight hundred twenty".