28267879386 has 8 divisors (see below), whose sum is σ = 56535758784. Its totient is φ = 9422626460.

The previous prime is 28267879379. The next prime is 28267879391. The reversal of 28267879386 is 68397876282.

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

28267879386 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355656610 + ... + 2355656621.

It is an arithmetic number, because the mean of its divisors is an integer number (7066969848).

Almost surely, 2^28267879386 is an apocalyptic number.

28267879386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28267879386 is a wasteful number, since it uses less digits than its factorization.

28267879386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711313236.

The product of its digits is 97542144, while the sum is 66.

The spelling of 28267879386 in words is "twenty-eight billion, two hundred sixty-seven million, eight hundred seventy-nine thousand, three hundred eighty-six".