28064325247 has 8 divisors (see below), whose sum is σ = 32096002176. Its totient is φ = 24038270232.

The previous prime is 28064325239. The next prime is 28064325281. The reversal of 28064325247 is 74252346082.

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 28064325247 - 2³ = 28064325239 is a prime.

It is a super-2 number, since 2×28064325247² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064325227) 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, 1394773 + ... + 1414750.

It is an arithmetic number, because the mean of its divisors is an integer number (4012000272).

Almost surely, 2^28064325247 is an apocalyptic number.

28064325247 is a deficient number, since it is larger than the sum of its proper divisors (4031676929).

28064325247 is a wasteful number, since it uses less digits than its factorization.

28064325247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810957.

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 28064325247 in words is "twenty-eight billion, sixty-four million, three hundred twenty-five thousand, two hundred forty-seven".