28783312727 has 8 divisors (see below), whose sum is σ = 31835182176. Its totient is φ = 25851124512.

The previous prime is 28783312721. The next prime is 28783312757. The reversal of 28783312727 is 72721338782.

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 28783312727 - 2⁸ = 28783312471 is a prime.

It is a super-3 number, since 3×28783312727³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28783312721) 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, 29919803 + ... + 29920764.

It is an arithmetic number, because the mean of its divisors is an integer number (3979397772).

Almost surely, 2^28783312727 is an apocalyptic number.

28783312727 is a deficient number, since it is larger than the sum of its proper divisors (3051869449).

28783312727 is a wasteful number, since it uses less digits than its factorization.

28783312727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59840617.

The product of its digits is 1580544, while the sum is 50.

The spelling of 28783312727 in words is "twenty-eight billion, seven hundred eighty-three million, three hundred twelve thousand, seven hundred twenty-seven".