28387815347 has 8 divisors (see below), whose sum is σ = 30277088496. Its totient is φ = 26522920192.

The previous prime is 28387815329. The next prime is 28387815371. The reversal of 28387815347 is 74351878382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28387815347 - 2¹⁴ = 28387798963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28387815292 and 28387815301.

It is not an unprimeable number, because it can be changed into a prime (28387815377) 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, 6092093 + ... + 6096750.

It is an arithmetic number, because the mean of its divisors is an integer number (3784636062).

Almost surely, 2^28387815347 is an apocalyptic number.

28387815347 is a deficient number, since it is larger than the sum of its proper divisors (1889273149).

28387815347 is a wasteful number, since it uses less digits than its factorization.

28387815347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12188997.

The product of its digits is 9031680, while the sum is 56.

The spelling of 28387815347 in words is "twenty-eight billion, three hundred eighty-seven million, eight hundred fifteen thousand, three hundred forty-seven".