28367994 has 8 divisors (see below), whose sum is σ = 56736000. Its totient is φ = 9455996.

The previous prime is 28367981. The next prime is 28368029. The reversal of 28367994 is 49976382.

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

28367994 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, 2363994 + ... + 2364005.

It is an arithmetic number, because the mean of its divisors is an integer number (7092000).

Almost surely, 2^28367994 is an apocalyptic number.

28367994 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.

28367994 is a wasteful number, since it uses less digits than its factorization.

28367994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728004.

The product of its digits is 653184, while the sum is 48.

The square root of 28367994 is about 5326.1612818239. The cubic root of 28367994 is about 304.9834049916.

The spelling of 28367994 in words is "twenty-eight million, three hundred sixty-seven thousand, nine hundred ninety-four".