23923020 has 96 divisors (see below), whose sum is σ = 74301696. Its totient is φ = 5702400.

The previous prime is 23923019. The next prime is 23923037. The reversal of 23923020 is 2032932.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43950 + ... + 44490.

It is an arithmetic number, because the mean of its divisors is an integer number (773976).

Almost surely, 2^23923020 is an apocalyptic number.

23923020 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 23923020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37150848).

23923020 is an abundant number, since it is smaller than the sum of its proper divisors (50378676).

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

23923020 is a wasteful number, since it uses less digits than its factorization.

23923020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 23923020 is about 4891.1164369702. The cubic root of 23923020 is about 288.1411827074.

Adding to 23923020 its reverse (2032932), we get a palindrome (25955952).

The spelling of 23923020 in words is "twenty-three million, nine hundred twenty-three thousand, twenty".