23902920 has 96 divisors (see below), whose sum is σ = 78923520. Its totient is φ = 6272640.

The previous prime is 23902919. The next prime is 23902927. The reversal of 23902920 is 2920932.

It is a super-3 number, since 3×23902920³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23902927) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 23625 + ... + 24615.

It is an arithmetic number, because the mean of its divisors is an integer number (822120).

Almost surely, 2^23902920 is an apocalyptic number.

23902920 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 23902920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39461760).

23902920 is an abundant number, since it is smaller than the sum of its proper divisors (55020600).

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

23902920 is a wasteful number, since it uses less digits than its factorization.

23902920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 23902920 is about 4889.0612595876. The cubic root of 23902920 is about 288.0604618430.

The spelling of 23902920 in words is "twenty-three million, nine hundred two thousand, nine hundred twenty".