23323489920 has 192 divisors, whose sum is σ = 83522406240. Its totient is φ = 6219555840.

The previous prime is 23323489913. The next prime is 23323489921. The reversal of 23323489920 is 2998432332.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (23323489921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80535 + ... + 230505.

Almost surely, 2^23323489920 is an apocalyptic number.

23323489920 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 23323489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41761203120).

23323489920 is an abundant number, since it is smaller than the sum of its proper divisors (60198916320).

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

23323489920 is an equidigital number, since it uses as much as digits as its factorization.

23323489920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150005 (or 149981 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 23323489920 in words is "twenty-three billion, three hundred twenty-three million, four hundred eighty-nine thousand, nine hundred twenty".