28540334015 has 4 divisors (see below), whose sum is σ = 34248400824. Its totient is φ = 22832267208.

The previous prime is 28540333957. The next prime is 28540334027. The reversal of 28540334015 is 51043304582.

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 28540334015 - 2¹⁶ = 28540268479 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, 2854033397 + ... + 2854033406.

It is an arithmetic number, because the mean of its divisors is an integer number (8562100206).

Almost surely, 2^28540334015 is an apocalyptic number.

28540334015 is a deficient number, since it is larger than the sum of its proper divisors (5708066809).

28540334015 is an equidigital number, since it uses as much as digits as its factorization.

28540334015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5708066808.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 28540334015 its reverse (51043304582), we get a palindrome (79583638597).

The spelling of 28540334015 in words is "twenty-eight billion, five hundred forty million, three hundred thirty-four thousand, fifteen".