22621453200 has 480 divisors, whose sum is σ = 85862659200. Its totient is φ = 5710694400.

The previous prime is 22621453139. The next prime is 22621453243. The reversal of 22621453200 is 235412622.

It is a happy number.

22621453200 is a `hidden beast` number, since 2 + 2 + 6 + 2 + 1 + 453 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16620520 + ... + 16621880.

It is an arithmetic number, because the mean of its divisors is an integer number (178880540).

Almost surely, 2^22621453200 is an apocalyptic number.

22621453200 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 22621453200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42931329600).

22621453200 is an abundant number, since it is smaller than the sum of its proper divisors (63241206000).

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

22621453200 is a wasteful number, since it uses less digits than its factorization.

22621453200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419 (or 1390 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 22621453200 its reverse (235412622), we get a palindrome (22856865822).

The spelling of 22621453200 in words is "twenty-two billion, six hundred twenty-one million, four hundred fifty-three thousand, two hundred".