28126558674 has 24 divisors (see below), whose sum is σ = 60944183820. Its totient is φ = 9375010848.

The previous prime is 28126558673. The next prime is 28126558699. The reversal of 28126558674 is 47685562182.

28126558674 is a `hidden beast` number, since 2 + 8 + 1 + 26 + 558 + 67 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27941462649 + 185096025 = 167157^2 + 13605^2 .

It is a super-2 number, since 2×28126558674² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28126558674.

It is not an unprimeable number, because it can be changed into a prime (28126558673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 458532 + ... + 516240.

Almost surely, 2^28126558674 is an apocalyptic number.

28126558674 is an abundant number, since it is smaller than the sum of its proper divisors (32817625146).

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

28126558674 is a wasteful number, since it uses less digits than its factorization.

28126558674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84794 (or 84791 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 28126558674 in words is "twenty-eight billion, one hundred twenty-six million, five hundred fifty-eight thousand, six hundred seventy-four".