16398894224 has 20 divisors (see below), whose sum is σ = 33445113840. Its totient is φ = 7767897120.

The previous prime is 16398894217. The next prime is 16398894227. The reversal of 16398894224 is 42249889361.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 16398894224.

It is not an unprimeable number, because it can be changed into a prime (16398894227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26971562 + ... + 26972169.

It is an arithmetic number, because the mean of its divisors is an integer number (1672255692).

Almost surely, 2^16398894224 is an apocalyptic number.

It is an amenable number.

16398894224 is an abundant number, since it is smaller than the sum of its proper divisors (17046219616).

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

16398894224 is a wasteful number, since it uses less digits than its factorization.

16398894224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53943758 (or 53943752 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 56.

The spelling of 16398894224 in words is "sixteen billion, three hundred ninety-eight million, eight hundred ninety-four thousand, two hundred twenty-four".