28658832771 has 8 divisors (see below), whose sum is σ = 38212629184. Its totient is φ = 19105462440.

The previous prime is 28658832751. The next prime is 28658832779. The reversal of 28658832771 is 17723885682.

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

It is not a de Polignac number, because 28658832771 - 2⁹ = 28658832259 is a prime.

It is a super-2 number, since 2×28658832771² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28658832779) 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, 118080 + ... + 266946.

It is an arithmetic number, because the mean of its divisors is an integer number (4776578648).

Almost surely, 2^28658832771 is an apocalyptic number.

28658832771 is a deficient number, since it is larger than the sum of its proper divisors (9553796413).

28658832771 is a wasteful number, since it uses less digits than its factorization.

28658832771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213041.

The product of its digits is 9031680, while the sum is 57.

The spelling of 28658832771 in words is "twenty-eight billion, six hundred fifty-eight million, eight hundred thirty-two thousand, seven hundred seventy-one".