28276864403 has 4 divisors (see below), whose sum is σ = 28278831840. Its totient is φ = 28274896968.

The previous prime is 28276864397. The next prime is 28276864409. The reversal of 28276864403 is 30446867282.

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

It is an interprime number because it is at equal distance from previous prime (28276864397) and next prime (28276864409).

It is a cyclic number.

It is not a de Polignac number, because 28276864403 - 2⁴ = 28276864387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28276864409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962000 + ... + 990957.

It is an arithmetic number, because the mean of its divisors is an integer number (7069707960).

Almost surely, 2^28276864403 is an apocalyptic number.

28276864403 is a deficient number, since it is larger than the sum of its proper divisors (1967437).

28276864403 is a wasteful number, since it uses less digits than its factorization.

28276864403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967436.

The product of its (nonzero) digits is 3096576, while the sum is 50.

The spelling of 28276864403 in words is "twenty-eight billion, two hundred seventy-six million, eight hundred sixty-four thousand, four hundred three".