23021330420 has 96 divisors (see below), whose sum is σ = 54676944000. Its totient is φ = 8065164800.

The previous prime is 23021330413. The next prime is 23021330491. The reversal of 23021330420 is 2403312032.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23021330392 and 23021330401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3128906 + ... + 3136254.

It is an arithmetic number, because the mean of its divisors is an integer number (569551500).

Almost surely, 2^23021330420 is an apocalyptic number.

23021330420 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 23021330420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27338472000).

23021330420 is an abundant number, since it is smaller than the sum of its proper divisors (31655613580).

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

23021330420 is a wasteful number, since it uses less digits than its factorization.

23021330420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889 (or 7887 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 23021330420 its reverse (2403312032), we get a palindrome (25424642452).

The spelling of 23021330420 in words is "twenty-three billion, twenty-one million, three hundred thirty thousand, four hundred twenty".