22279492800 has 672 divisors, whose sum is σ = 89801395200. Its totient is φ = 5344542720.

The previous prime is 22279492799. The next prime is 22279492831. The reversal of 22279492800 is 829497222.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16890541 + ... + 16891859.

Almost surely, 2^22279492800 is an apocalyptic number.

22279492800 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 22279492800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44900697600).

22279492800 is an abundant number, since it is smaller than the sum of its proper divisors (67521902400).

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

22279492800 is a wasteful number, since it uses less digits than its factorization.

22279492800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390 (or 1369 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 22279492800 in words is "twenty-two billion, two hundred seventy-nine million, four hundred ninety-two thousand, eight hundred".