28313994 has 8 divisors (see below), whose sum is σ = 56628000. Its totient is φ = 9437996.

The previous prime is 28313983. The next prime is 28314001. The reversal of 28313994 is 49931382.

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

28313994 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, 2359494 + ... + 2359505.

It is an arithmetic number, because the mean of its divisors is an integer number (7078500).

Almost surely, 2^28313994 is an apocalyptic number.

28313994 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.

28313994 is a wasteful number, since it uses less digits than its factorization.

28313994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4719004.

The product of its digits is 46656, while the sum is 39.

The square root of 28313994 is about 5321.0895500828. The cubic root of 28313994 is about 304.7897646414.

The spelling of 28313994 in words is "twenty-eight million, three hundred thirteen thousand, nine hundred ninety-four".