23953920 has 80 divisors (see below), whose sum is σ = 76602240. Its totient is φ = 6385664.

The previous prime is 23953873. The next prime is 23953921. The reversal of 23953920 is 2935932.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (23953921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6121 + ... + 9239.

It is an arithmetic number, because the mean of its divisors is an integer number (957528).

Almost surely, 2^23953920 is an apocalyptic number.

23953920 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 23953920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38301120).

23953920 is an abundant number, since it is smaller than the sum of its proper divisors (52648320).

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

23953920 is an equidigital number, since it uses as much as digits as its factorization.

23953920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145 (or 3129 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 23953920 is about 4894.2742056407. The cubic root of 23953920 is about 288.2651878412.

The spelling of 23953920 in words is "twenty-three million, nine hundred fifty-three thousand, nine hundred twenty".