23321020 has 24 divisors (see below), whose sum is σ = 49067424. Its totient is φ = 9310656.

The previous prime is 23320987. The next prime is 23321041. The reversal of 23321020 is 2012332.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16377 + ... + 17743.

It is an arithmetic number, because the mean of its divisors is an integer number (2044476).

Almost surely, 2^23321020 is an apocalyptic number.

23321020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23321020 is an abundant number, since it is smaller than the sum of its proper divisors (25746404).

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

23321020 is a wasteful number, since it uses less digits than its factorization.

23321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229 (or 2227 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 23321020 is about 4829.1841961143. The cubic root of 23321020 is about 285.7036884165.

Adding to 23321020 its reverse (2012332), we get a palindrome (25333352).

The spelling of 23321020 in words is "twenty-three million, three hundred twenty-one thousand, twenty".