28869426827669 has 4 divisors (see below), whose sum is σ = 28934594834496. Its totient is φ = 28804258820844.

The previous prime is 28869426827611. The next prime is 28869426827701. The reversal of 28869426827669 is 96672862496882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28869426827669 - 2²⁰ = 28869425779093 is a prime.

It is a super-2 number, since 2×28869426827669² (a number of 28 digits) contains 22 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 (28869426827069) 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, 32584002749 + ... + 32584003634.

It is an arithmetic number, because the mean of its divisors is an integer number (7233648708624).

Almost surely, 2^{28869426827669} is an apocalyptic number.

It is an amenable number.

28869426827669 is a deficient number, since it is larger than the sum of its proper divisors (65168006827).

28869426827669 is an equidigital number, since it uses as much as digits as its factorization.

28869426827669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65168006826.

The product of its digits is 12039487488, while the sum is 83.

The spelling of 28869426827669 in words is "twenty-eight trillion, eight hundred sixty-nine billion, four hundred twenty-six million, eight hundred twenty-seven thousand, six hundred sixty-nine".