28287334279 has 8 divisors (see below), whose sum is σ = 28434459312. Its totient is φ = 28140553920.

The previous prime is 28287334253. The next prime is 28287334301. The reversal of 28287334279 is 97243378282.

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 28287334279 - 2⁵ = 28287334247 is a prime.

It is a super-2 number, since 2×28287334279² (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 (28287334249) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 79219 + ... + 250699.

It is an arithmetic number, because the mean of its divisors is an integer number (3554307414).

Almost surely, 2^28287334279 is an apocalyptic number.

28287334279 is a deficient number, since it is larger than the sum of its proper divisors (147125033).

28287334279 is a wasteful number, since it uses less digits than its factorization.

28287334279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172337.

The product of its digits is 8128512, while the sum is 55.

The spelling of 28287334279 in words is "twenty-eight billion, two hundred eighty-seven million, three hundred thirty-four thousand, two hundred seventy-nine".