28989286474 has 4 divisors (see below), whose sum is σ = 43483929714. Its totient is φ = 14494643236.

The previous prime is 28989286451. The next prime is 28989286481. The reversal of 28989286474 is 47468298982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15407015625 + 13582270849 = 124125^2 + 116543^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7247321617 + ... + 7247321620.

Almost surely, 2^28989286474 is an apocalyptic number.

28989286474 is a deficient number, since it is larger than the sum of its proper divisors (14494643240).

28989286474 is a wasteful number, since it uses less digits than its factorization.

28989286474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14494643239.

The product of its digits is 111476736, while the sum is 67.

The spelling of 28989286474 in words is "twenty-eight billion, nine hundred eighty-nine million, two hundred eighty-six thousand, four hundred seventy-four".