28321739994 has 8 divisors (see below), whose sum is σ = 56643480000. Its totient is φ = 9440579996.

The previous prime is 28321739987. The next prime is 28321740067. The reversal of 28321739994 is 49993712382.

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

28321739994 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, 2360144994 + ... + 2360145005.

It is an arithmetic number, because the mean of its divisors is an integer number (7080435000).

Almost surely, 2^28321739994 is an apocalyptic number.

28321739994 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.

28321739994 is a wasteful number, since it uses less digits than its factorization.

28321739994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720290004.

The product of its digits is 5878656, while the sum is 57.

The spelling of 28321739994 in words is "twenty-eight billion, three hundred twenty-one million, seven hundred thirty-nine thousand, nine hundred ninety-four".