28320814513 has 8 divisors (see below), whose sum is σ = 28713487040. Its totient is φ = 27930841200.

The previous prime is 28320814507. The next prime is 28320814537. The reversal of 28320814513 is 31541802382.

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 28320814513 - 2²⁵ = 28287260081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28320814013) 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, 653670 + ... + 695647.

It is an arithmetic number, because the mean of its divisors is an integer number (3589185880).

Almost surely, 2^28320814513 is an apocalyptic number.

It is an amenable number.

28320814513 is a deficient number, since it is larger than the sum of its proper divisors (392672527).

28320814513 is a wasteful number, since it uses less digits than its factorization.

28320814513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349607.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 28320814513 in words is "twenty-eight billion, three hundred twenty million, eight hundred fourteen thousand, five hundred thirteen".