23789920 has 96 divisors (see below), whose sum is σ = 70108416. Its totient is φ = 7411200.

The previous prime is 23789903. The next prime is 23789923. The reversal of 23789920 is 2998732.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23789923) 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, 11355 + ... + 13285.

It is an arithmetic number, because the mean of its divisors is an integer number (730296).

Almost surely, 2^23789920 is an apocalyptic number.

23789920 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 23789920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35054208).

23789920 is an abundant number, since it is smaller than the sum of its proper divisors (46318496).

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

23789920 is a wasteful number, since it uses less digits than its factorization.

23789920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964 (or 1956 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 23789920 is about 4877.4911583723. The cubic root of 23789920 is about 287.6058136028.

The spelling of 23789920 in words is "twenty-three million, seven hundred eighty-nine thousand, nine hundred twenty".