28360238399 has 8 divisors (see below), whose sum is σ = 28643887440. Its totient is φ = 28076934016.

The previous prime is 28360238381. The next prime is 28360238449. The reversal of 28360238399 is 99383206382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28360238399 - 2⁸ = 28360238143 is a prime.

It is a super-2 number, since 2×28360238399² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28360238399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28360238329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80837 + ... + 251505.

It is an arithmetic number, because the mean of its divisors is an integer number (3580485930).

Almost surely, 2^28360238399 is an apocalyptic number.

28360238399 is a deficient number, since it is larger than the sum of its proper divisors (283649041).

28360238399 is a wasteful number, since it uses less digits than its factorization.

28360238399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172329.

The product of its (nonzero) digits is 3359232, while the sum is 53.

The spelling of 28360238399 in words is "twenty-eight billion, three hundred sixty million, two hundred thirty-eight thousand, three hundred ninety-nine".