28360382404 has 48 divisors (see below), whose sum is σ = 51299907120. Its totient is φ = 13710090240.

The previous prime is 28360382399. The next prime is 28360382419. The reversal of 28360382404 is 40428306382.

It can be written as a sum of positive squares in 8 ways, for example, as 42224004 + 28318158400 = 6498^2 + 168280^2 .

It is a super-2 number, since 2×28360382404² (a number of 22 digits) contains 22 as substring.

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, 8947732 + ... + 8950900.

It is an arithmetic number, because the mean of its divisors is an integer number (1068748065).

Almost surely, 2^28360382404 is an apocalyptic number.

It is an amenable number.

28360382404 is a deficient number, since it is larger than the sum of its proper divisors (22939524716).

28360382404 is a wasteful number, since it uses less digits than its factorization.

28360382404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688 (or 3686 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

Adding to 28360382404 its reverse (40428306382), we get a palindrome (68788688786).

The spelling of 28360382404 in words is "twenty-eight billion, three hundred sixty million, three hundred eighty-two thousand, four hundred four".