23893920 has 96 divisors (see below), whose sum is σ = 83643840. Its totient is φ = 6370560.

The previous prime is 23893889. The next prime is 23893921. The reversal of 23893920 is 2939832.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (23893921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1555 + ... + 7085.

It is an arithmetic number, because the mean of its divisors is an integer number (871290).

Almost surely, 2^23893920 is an apocalyptic number.

23893920 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 23893920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41821920).

23893920 is an abundant number, since it is smaller than the sum of its proper divisors (59749920).

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

23893920 is a wasteful number, since it uses less digits than its factorization.

23893920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555 (or 5541 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 23893920 is about 4888.1407508377. The cubic root of 23893920 is about 288.0243035046.

The spelling of 23893920 in words is "twenty-three million, eight hundred ninety-three thousand, nine hundred twenty".