28189361674 has 8 divisors (see below), whose sum is σ = 42285801348. Its totient is φ = 14094094560.

The previous prime is 28189361633. The next prime is 28189361701. The reversal of 28189361674 is 47616398182.

It can be written as a sum of positive squares in 2 ways, for example, as 25394653449 + 2794708225 = 159357^2 + 52865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28189361674² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230347 + ... + 330814.

Almost surely, 2^28189361674 is an apocalyptic number.

28189361674 is a deficient number, since it is larger than the sum of its proper divisors (14096439674).

28189361674 is a wasteful number, since it uses less digits than its factorization.

28189361674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586280.

The product of its digits is 3483648, while the sum is 55.

The spelling of 28189361674 in words is "twenty-eight billion, one hundred eighty-nine million, three hundred sixty-one thousand, six hundred seventy-four".