28028574087 has 8 divisors (see below), whose sum is σ = 37443164400. Its totient is φ = 18649849920.

The previous prime is 28028574053. The next prime is 28028574131. The reversal of 28028574087 is 78047582082.

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

It is not a de Polignac number, because 28028574087 - 2¹⁶ = 28028508551 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28028574047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8964712 + ... + 8967837.

It is an arithmetic number, because the mean of its divisors is an integer number (4680395550).

Almost surely, 2^28028574087 is an apocalyptic number.

28028574087 is a deficient number, since it is larger than the sum of its proper divisors (9414590313).

28028574087 is a wasteful number, since it uses less digits than its factorization.

28028574087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17933073.

The product of its (nonzero) digits is 2007040, while the sum is 51.

The spelling of 28028574087 in words is "twenty-eight billion, twenty-eight million, five hundred seventy-four thousand, eighty-seven".