28195267269 has 24 divisors (see below), whose sum is σ = 40763586720. Its totient is φ = 17327224512.

The previous prime is 28195267267. The next prime is 28195267271. The reversal of 28195267269 is 96276259182.

It is an interprime number because it is at equal distance from previous prime (28195267267) and next prime (28195267271).

It is not a de Polignac number, because 28195267269 - 2¹ = 28195267267 is a prime.

It is a super-2 number, since 2×28195267269² (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 (28195267267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 337047 + ... + 412299.

It is an arithmetic number, because the mean of its divisors is an integer number (1698482780).

Almost surely, 2^28195267269 is an apocalyptic number.

It is an amenable number.

28195267269 is a deficient number, since it is larger than the sum of its proper divisors (12568319451).

28195267269 is a wasteful number, since it uses less digits than its factorization.

28195267269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76021 (or 76008 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 57.

The spelling of 28195267269 in words is "twenty-eight billion, one hundred ninety-five million, two hundred sixty-seven thousand, two hundred sixty-nine".