28182800399 has 4 divisors (see below), whose sum is σ = 30350708136. Its totient is φ = 26014892664.

The previous prime is 28182800353. The next prime is 28182800419. The reversal of 28182800399 is 99300828182.

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 28182800399 - 2¹⁶ = 28182734863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28182800099) 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, 1083953849 + ... + 1083953874.

It is an arithmetic number, because the mean of its divisors is an integer number (7587677034).

Almost surely, 2^28182800399 is an apocalyptic number.

28182800399 is a deficient number, since it is larger than the sum of its proper divisors (2167907737).

28182800399 is a wasteful number, since it uses less digits than its factorization.

28182800399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167907736.

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 28182800399 in words is "twenty-eight billion, one hundred eighty-two million, eight hundred thousand, three hundred ninety-nine".