28286130815 has 4 divisors (see below), whose sum is σ = 33943356984. Its totient is φ = 22628904648.

The previous prime is 28286130791. The next prime is 28286130869. The reversal of 28286130815 is 51803168282.

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 28286130815 - 2¹⁴ = 28286114431 is a prime.

It is a Duffinian 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, 2828613077 + ... + 2828613086.

It is an arithmetic number, because the mean of its divisors is an integer number (8485839246).

Almost surely, 2^28286130815 is an apocalyptic number.

28286130815 is a deficient number, since it is larger than the sum of its proper divisors (5657226169).

28286130815 is an equidigital number, since it uses as much as digits as its factorization.

28286130815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657226168.

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 28286130815 in words is "twenty-eight billion, two hundred eighty-six million, one hundred thirty thousand, eight hundred fifteen".