28318319678016 has 63 divisors (see below), whose sum is σ = 81169716403321. Its totient is φ = 9439397320704.

The previous prime is 28318319677997. The next prime is 28318319678059. The reversal of 28318319678016 is 61087691381382.

The square root of 28318319678016 is 5321496.

It is a perfect power (a square), and thus also a powerful number.

28318319678016 is a `hidden beast` number, since 283 + 1 + 83 + 196 + 7 + 80 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18595896791616 + 9722422886400 = 4312296^2 + 3118080^2 .

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 127605040 + ... + 127826768.

Almost surely, 2^{28318319678016} is an apocalyptic number.

28318319678016 is the 5321496-th square number.

It is an amenable number.

28318319678016 is an abundant number, since it is smaller than the sum of its proper divisors (52851396725305).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28318319678016 is an frugal number, since it uses more digits than its factorization.

28318319678016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443476 (or 221734 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 28318319678016 in words is "twenty-eight trillion, three hundred eighteen billion, three hundred nineteen million, six hundred seventy-eight thousand, sixteen".