28578767459 has 4 divisors (see below), whose sum is σ = 31176837240. Its totient is φ = 25980697680.

The previous prime is 28578767453. The next prime is 28578767471. The reversal of 28578767459 is 95476787582.

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

It is a cyclic number.

It is not a de Polignac number, because 28578767459 - 2¹² = 28578763363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28578767453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1299034874 + ... + 1299034895.

It is an arithmetic number, because the mean of its divisors is an integer number (7794209310).

Almost surely, 2^28578767459 is an apocalyptic number.

28578767459 is a deficient number, since it is larger than the sum of its proper divisors (2598069781).

28578767459 is a wasteful number, since it uses less digits than its factorization.

28578767459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598069780.

The product of its digits is 237081600, while the sum is 68.

The spelling of 28578767459 in words is "twenty-eight billion, five hundred seventy-eight million, seven hundred sixty-seven thousand, four hundred fifty-nine".