28857128367 has 16 divisors (see below), whose sum is σ = 38722881888. Its totient is φ = 19115120640.

The previous prime is 28857128263. The next prime is 28857128383. The reversal of 28857128367 is 76382175882.

It is not a de Polignac number, because 28857128367 - 2⁷ = 28857128239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28857121367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249093 + ... + 346065.

It is an arithmetic number, because the mean of its divisors is an integer number (2420180118).

Almost surely, 2^28857128367 is an apocalyptic number.

28857128367 is a deficient number, since it is larger than the sum of its proper divisors (9865753521).

28857128367 is a wasteful number, since it uses less digits than its factorization.

28857128367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97610.

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

The spelling of 28857128367 in words is "twenty-eight billion, eight hundred fifty-seven million, one hundred twenty-eight thousand, three hundred sixty-seven".