28091339376 has 80 divisors (see below), whose sum is σ = 77764022784. Its totient is φ = 8706767872.

The previous prime is 28091339327. The next prime is 28091339383. The reversal of 28091339376 is 67393319082.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139656 + ... + 275111.

Almost surely, 2^28091339376 is an apocalyptic number.

It is an amenable number.

28091339376 is an abundant number, since it is smaller than the sum of its proper divisors (49672683408).

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

28091339376 is a wasteful number, since it uses less digits than its factorization.

28091339376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414878 (or 414872 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The spelling of 28091339376 in words is "twenty-eight billion, ninety-one million, three hundred thirty-nine thousand, three hundred seventy-six".