28421040715 has 16 divisors (see below), whose sum is σ = 36064094976. Its totient is φ = 21466713600.

The previous prime is 28421040701. The next prime is 28421040751. The reversal of 28421040715 is 51704012482.

It is not a de Polignac number, because 28421040715 - 2²¹ = 28418943563 is a prime.

It is a super-2 number, since 2×28421040715² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2229762 + ... + 2242471.

It is an arithmetic number, because the mean of its divisors is an integer number (2254005936).

Almost surely, 2^28421040715 is an apocalyptic number.

28421040715 is a deficient number, since it is larger than the sum of its proper divisors (7643054261).

28421040715 is a wasteful number, since it uses less digits than its factorization.

28421040715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472310.

The product of its (nonzero) digits is 17920, while the sum is 34.

The spelling of 28421040715 in words is "twenty-eight billion, four hundred twenty-one million, forty thousand, seven hundred fifteen".