23320020 has 48 divisors (see below), whose sum is σ = 66282048. Its totient is φ = 6124800.

The previous prime is 23320019. The next prime is 23320057. The reversal of 23320020 is 2002332.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 23319978 and 23320005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120 + ... + 6920.

It is an arithmetic number, because the mean of its divisors is an integer number (1380876).

Almost surely, 2^23320020 is an apocalyptic number.

23320020 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 23320020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33141024).

23320020 is an abundant number, since it is smaller than the sum of its proper divisors (42962028).

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

23320020 is a wasteful number, since it uses less digits than its factorization.

23320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880 (or 5878 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 23320020 is about 4829.0806578478. The cubic root of 23320020 is about 285.6996047218.

Adding to 23320020 its reverse (2002332), we get a palindrome (25322352).

The spelling of 23320020 in words is "twenty-three million, three hundred twenty thousand, twenty".