28671397588 has 12 divisors (see below), whose sum is σ = 50181567520. Its totient is φ = 14333806872.

The previous prime is 28671397567. The next prime is 28671397591. The reversal of 28671397588 is 88579317682.

It is a happy number.

It is a congruent number.

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, 438606 + ... + 499717.

Almost surely, 2^28671397588 is an apocalyptic number.

It is an amenable number.

28671397588 is a deficient number, since it is larger than the sum of its proper divisors (21510169932).

28671397588 is a wasteful number, since it uses less digits than its factorization.

28671397588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945966 (or 945964 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 64.

The spelling of 28671397588 in words is "twenty-eight billion, six hundred seventy-one million, three hundred ninety-seven thousand, five hundred eighty-eight".