28389447022 has 4 divisors (see below), whose sum is σ = 42584170536. Its totient is φ = 14194723510.

The previous prime is 28389447019. The next prime is 28389447029. The reversal of 28389447022 is 22074498382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22074498382 = 2 ⋅11037249191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28389447029) by changing a digit.

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 as a sum of consecutive naturals, namely, 7097361754 + ... + 7097361757.

It is an arithmetic number, because the mean of its divisors is an integer number (10646042634).

Almost surely, 2^28389447022 is an apocalyptic number.

28389447022 is a deficient number, since it is larger than the sum of its proper divisors (14194723514).

28389447022 is a wasteful number, since it uses less digits than its factorization.

28389447022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14194723513.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 28389447022 in words is "twenty-eight billion, three hundred eighty-nine million, four hundred forty-seven thousand, twenty-two".