23224156400 has 60 divisors (see below), whose sum is σ = 56628877752. Its totient is φ = 9151000320.

The previous prime is 23224156387. The next prime is 23224156409. The reversal of 23224156400 is 465142232.

It is a super-2 number, since 2×23224156400² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23224156409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406487 + ... + 460086.

Almost surely, 2^23224156400 is an apocalyptic number.

23224156400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23224156400 is an abundant number, since it is smaller than the sum of its proper divisors (33404721352).

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

23224156400 is a wasteful number, since it uses less digits than its factorization.

23224156400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866658 (or 866647 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 23224156400 its reverse (465142232), we get a palindrome (23689298632).

The spelling of 23224156400 in words is "twenty-three billion, two hundred twenty-four million, one hundred fifty-six thousand, four hundred".