28255538467 has 8 divisors (see below), whose sum is σ = 30742744256. Its totient is φ = 25813147392.

The previous prime is 28255538453. The next prime is 28255538491. The reversal of 28255538467 is 76483555282.

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

It is a cyclic number.

It is not a de Polignac number, because 28255538467 - 2²³ = 28247149859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28255536467) 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, 11202363 + ... + 11204884.

It is an arithmetic number, because the mean of its divisors is an integer number (3842843032).

Almost surely, 2^28255538467 is an apocalyptic number.

28255538467 is a deficient number, since it is larger than the sum of its proper divisors (2487205789).

28255538467 is a wasteful number, since it uses less digits than its factorization.

28255538467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22407357.

The product of its digits is 16128000, while the sum is 55.

The spelling of 28255538467 in words is "twenty-eight billion, two hundred fifty-five million, five hundred thirty-eight thousand, four hundred sixty-seven".