28335994 has 8 divisors (see below), whose sum is σ = 42558228. Its totient is φ = 14149920.

The previous prime is 28335949. The next prime is 28335997. The reversal of 28335994 is 49953382.

It can be written as a sum of positive squares in 2 ways, for example, as 23648769 + 4687225 = 4863^2 + 2165^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 28335994.

It is not an unprimeable number, because it can be changed into a prime (28335997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6987 + ... + 10270.

Almost surely, 2^28335994 is an apocalyptic number.

28335994 is a deficient number, since it is larger than the sum of its proper divisors (14222234).

28335994 is a wasteful number, since it uses less digits than its factorization.

28335994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18080.

The product of its digits is 233280, while the sum is 43.

The square root of 28335994 is about 5323.1563944712. The cubic root of 28335994 is about 304.8686848493.

The spelling of 28335994 in words is "twenty-eight million, three hundred thirty-five thousand, nine hundred ninety-four".