22005449280 has 224 divisors, whose sum is σ = 77727657600. Its totient is φ = 5860767744.

The previous prime is 22005449273. The next prime is 22005449339. The reversal of 22005449280 is 8294450022.

22005449280 is a `hidden beast` number, since 2 + 20 + 0 + 544 + 92 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 13641754 + ... + 13643366.

Almost surely, 2^22005449280 is an apocalyptic number.

22005449280 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 22005449280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38863828800).

22005449280 is an abundant number, since it is smaller than the sum of its proper divisors (55722208320).

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

22005449280 is a wasteful number, since it uses less digits than its factorization.

22005449280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218 (or 3202 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 22005449280 in words is "twenty-two billion, five million, four hundred forty-nine thousand, two hundred eighty".