28571105269 has 40 divisors (see below), whose sum is σ = 34195862848. Its totient is φ = 23862263040.

The previous prime is 28571105263. The next prime is 28571105281. The reversal of 28571105269 is 96250117582.

It is not a de Polignac number, because 28571105269 - 2⁵ = 28571105237 is a prime.

It is a super-2 number, since 2×28571105269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28571105263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15603184 + ... + 15605014.

Almost surely, 2^28571105269 is an apocalyptic number.

It is an amenable number.

28571105269 is a deficient number, since it is larger than the sum of its proper divisors (5624757579).

28571105269 is an frugal number, since it uses more digits than its factorization.

28571105269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023 (or 2002 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 28571105269 in words is "twenty-eight billion, five hundred seventy-one million, one hundred five thousand, two hundred sixty-nine".