22238997446400 has 432 divisors, whose sum is σ = 86583846279168. Its totient is φ = 4919224320000.

The previous prime is 22238997446363. The next prime is 22238997446411. The reversal of 22238997446400 is 464479983222.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1497550 + ... + 6835250.

Almost surely, 2^{22238997446400} is an apocalyptic number.

22238997446400 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 22238997446400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43291923139584).

22238997446400 is an abundant number, since it is smaller than the sum of its proper divisors (64344848832768).

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

22238997446400 is a wasteful number, since it uses less digits than its factorization.

22238997446400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5337768 (or 5337749 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 60.

The spelling of 22238997446400 in words is "twenty-two trillion, two hundred thirty-eight billion, nine hundred ninety-seven million, four hundred forty-six thousand, four hundred".