23220312400 has 240 divisors, whose sum is σ = 60260143104. Its totient is φ = 8577226240.

The previous prime is 23220312397. The next prime is 23220312463. The reversal of 23220312400 is 421302232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35888877 + ... + 35889523.

Almost surely, 2^23220312400 is an apocalyptic number.

23220312400 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 23220312400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30130071552).

23220312400 is an abundant number, since it is smaller than the sum of its proper divisors (37039830704).

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

23220312400 is a wasteful number, since it uses less digits than its factorization.

23220312400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 23220312400 its reverse (421302232), we get a palindrome (23641614632).

The spelling of 23220312400 in words is "twenty-three billion, two hundred twenty million, three hundred twelve thousand, four hundred".