28259994 has 32 divisors (see below), whose sum is σ = 65197440. Its totient is φ = 7998912.

The previous prime is 28259969. The next prime is 28260017. The reversal of 28259994 is 49995282.

It is a happy number.

It is a Curzon 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, 1492 + ... + 7664.

It is an arithmetic number, because the mean of its divisors is an integer number (2037420).

Almost surely, 2^28259994 is an apocalyptic number.

28259994 is an abundant number, since it is smaller than the sum of its proper divisors (36937446).

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

28259994 is a wasteful number, since it uses less digits than its factorization.

28259994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6294.

The product of its digits is 466560, while the sum is 48.

The square root of 28259994 is about 5316.0129796681. The cubic root of 28259994 is about 304.5958779292.

The spelling of 28259994 in words is "twenty-eight million, two hundred fifty-nine thousand, nine hundred ninety-four".