28278517334 has 8 divisors (see below), whose sum is σ = 43404236040. Its totient is φ = 13810438656.

The previous prime is 28278517331. The next prime is 28278517387. The reversal of 28278517334 is 43371587282.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28278517331) 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, 164409899 + ... + 164410070.

It is an arithmetic number, because the mean of its divisors is an integer number (5425529505).

Almost surely, 2^28278517334 is an apocalyptic number.

28278517334 is a deficient number, since it is larger than the sum of its proper divisors (15125718706).

28278517334 is a wasteful number, since it uses less digits than its factorization.

28278517334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328820014.

The product of its digits is 2257920, while the sum is 50.

The spelling of 28278517334 in words is "twenty-eight billion, two hundred seventy-eight million, five hundred seventeen thousand, three hundred thirty-four".