28009358 has 16 divisors (see below), whose sum is σ = 45886176. Its totient is φ = 12744480.

The previous prime is 28009357. The next prime is 28009367. The reversal of 28009358 is 85390082.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28009357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5741 + ... + 9432.

It is an arithmetic number, because the mean of its divisors is an integer number (2867886).

Almost surely, 2^28009358 is an apocalyptic number.

28009358 is a deficient number, since it is larger than the sum of its proper divisors (17876818).

28009358 is a wasteful number, since it uses less digits than its factorization.

28009358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15259.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 28009358 is about 5292.3867961441. The cubic root of 28009358 is about 303.6927224667.

The spelling of 28009358 in words is "twenty-eight million, nine thousand, three hundred fifty-eight".