28271431466 has 8 divisors (see below), whose sum is σ = 42416893380. Its totient is φ = 14132467008.

The previous prime is 28271431457. The next prime is 28271431537. The reversal of 28271431466 is 66413417282.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27446880241 + 824551225 = 165671^2 + 28715^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613471 + ... + 1630898.

Almost surely, 2^28271431466 is an apocalyptic number.

28271431466 is a deficient number, since it is larger than the sum of its proper divisors (14145461914).

28271431466 is a wasteful number, since it uses less digits than its factorization.

28271431466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248728.

The product of its digits is 387072, while the sum is 44.

The spelling of 28271431466 in words is "twenty-eight billion, two hundred seventy-one million, four hundred thirty-one thousand, four hundred sixty-six".