28134949587 has 8 divisors (see below), whose sum is σ = 37514900736. Its totient is φ = 18755815752.

The previous prime is 28134949567. The next prime is 28134949631. The reversal of 28134949587 is 78594943182.

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

It is not a de Polignac number, because 28134949587 - 2⁸ = 28134949331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28134949587.

It is not an unprimeable number, because it can be changed into a prime (28134949567) 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, 118903 + ... + 265344.

It is an arithmetic number, because the mean of its divisors is an integer number (4689362592).

Almost surely, 2^28134949587 is an apocalyptic number.

28134949587 is a deficient number, since it is larger than the sum of its proper divisors (9379951149).

28134949587 is a wasteful number, since it uses less digits than its factorization.

28134949587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408657.

The product of its digits is 17418240, while the sum is 60.

The spelling of 28134949587 in words is "twenty-eight billion, one hundred thirty-four million, nine hundred forty-nine thousand, five hundred eighty-seven".