28243335 has 16 divisors (see below), whose sum is σ = 45810144. Its totient is φ = 14856192.

The previous prime is 28243309. The next prime is 28243339. The reversal of 28243335 is 53334282.

It is not a de Polignac number, because 28243335 - 2¹⁰ = 28242311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28243339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11802 + ... + 13991.

It is an arithmetic number, because the mean of its divisors is an integer number (2863134).

Almost surely, 2^28243335 is an apocalyptic number.

28243335 is a deficient number, since it is larger than the sum of its proper divisors (17566809).

28243335 is a wasteful number, since it uses less digits than its factorization.

28243335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25874.

The product of its digits is 17280, while the sum is 30.

The square root of 28243335 is about 5314.4458789228. The cubic root of 28243335 is about 304.5360140319.

The spelling of 28243335 in words is "twenty-eight million, two hundred forty-three thousand, three hundred thirty-five".