28727115383 has 4 divisors (see below), whose sum is σ = 28727743488. Its totient is φ = 28726487280.

The previous prime is 28727115377. The next prime is 28727115397. The reversal of 28727115383 is 38351172782.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28727115383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28727115583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239558 + ... + 338883.

It is an arithmetic number, because the mean of its divisors is an integer number (7181935872).

Almost surely, 2^28727115383 is an apocalyptic number.

28727115383 is a deficient number, since it is larger than the sum of its proper divisors (628105).

28727115383 is an equidigital number, since it uses as much as digits as its factorization.

28727115383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628104.

The product of its digits is 564480, while the sum is 47.

The spelling of 28727115383 in words is "twenty-eight billion, seven hundred twenty-seven million, one hundred fifteen thousand, three hundred eighty-three".