28038335 has 16 divisors (see below), whose sum is σ = 36615936. Its totient is φ = 20487168.

The previous prime is 28038299. The next prime is 28038337. The reversal of 28038335 is 53383082.

It is not a de Polignac number, because 28038335 - 2⁶ = 28038271 is a prime.

It is a super-2 number, since 2×28038335² = 1572296459144450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28038337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4082 + ... + 8528.

It is an arithmetic number, because the mean of its divisors is an integer number (2288496).

Almost surely, 2^28038335 is an apocalyptic number.

28038335 is a deficient number, since it is larger than the sum of its proper divisors (8577601).

28038335 is a wasteful number, since it uses less digits than its factorization.

28038335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 28038335 is about 5295.1237001604. The cubic root of 28038335 is about 303.7974145135.

The spelling of 28038335 in words is "twenty-eight million, thirty-eight thousand, three hundred thirty-five".