28158043269 has 8 divisors (see below), whose sum is σ = 37595280352. Its totient is φ = 18746417520.

The previous prime is 28158043253. The next prime is 28158043271. The reversal of 28158043269 is 96234085182.

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

It is not a de Polignac number, because 28158043269 - 2⁴ = 28158043253 is a prime.

It is a super-2 number, since 2×28158043269² (a number of 22 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 (28158043229) 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, 6400267 + ... + 6404664.

It is an arithmetic number, because the mean of its divisors is an integer number (4699410044).

Almost surely, 2^28158043269 is an apocalyptic number.

It is an amenable number.

28158043269 is a deficient number, since it is larger than the sum of its proper divisors (9437237083).

28158043269 is a wasteful number, since it uses less digits than its factorization.

28158043269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12805667.

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 28158043269 in words is "twenty-eight billion, one hundred fifty-eight million, forty-three thousand, two hundred sixty-nine".