22197446928 has 160 divisors (see below), whose sum is σ = 65605562880. Its totient is φ = 7181758080.

The previous prime is 22197446917. The next prime is 22197446959. The reversal of 22197446928 is 82964479122.

It is a happy number.

22197446928 is a `hidden beast` number, since 2 + 2 + 197 + 446 + 9 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 3024223 + ... + 3031553.

It is an arithmetic number, because the mean of its divisors is an integer number (410034768).

Almost surely, 2^22197446928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22197446928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32802781440).

22197446928 is an abundant number, since it is smaller than the sum of its proper divisors (43408115952).

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

22197446928 is a wasteful number, since it uses less digits than its factorization.

22197446928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7554 (or 7542 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 22197446928 in words is "twenty-two billion, one hundred ninety-seven million, four hundred forty-six thousand, nine hundred twenty-eight".