28352444238313 has 8 divisors (see below), whose sum is σ = 30533463841608. Its totient is φ = 26171433542784.

The previous prime is 28352444238289. The next prime is 28352444238331. The reversal of 28352444238313 is 31383244425382.

It can be written as a sum of positive squares in 4 ways, for example, as 2945078151129 + 25407366087184 = 1716123^2 + 5040572^2 .

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 28352444238313 - 2⁵ = 28352444238281 is a prime.

It is a super-3 number, since 3×28352444238313³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (28352444238413) 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, 5334645 + ... + 9228397.

It is an arithmetic number, because the mean of its divisors is an integer number (3816682980201).

Almost surely, 2^{28352444238313} is an apocalyptic number.

It is an amenable number.

28352444238313 is a deficient number, since it is larger than the sum of its proper divisors (2181019603295).

28352444238313 is a wasteful number, since it uses less digits than its factorization.

28352444238313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453883.

The product of its digits is 13271040, while the sum is 52.

The spelling of 28352444238313 in words is "twenty-eight trillion, three hundred fifty-two billion, four hundred forty-four million, two hundred thirty-eight thousand, three hundred thirteen".