28806353 has 4 divisors (see below), whose sum is σ = 28943088. Its totient is φ = 28669620.

The previous prime is 28806293. The next prime is 28806361. The reversal of 28806353 is 35360882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28806353 - 2¹⁸ = 28544209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28806383) 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, 68051 + ... + 68472.

It is an arithmetic number, because the mean of its divisors is an integer number (7235772).

Almost surely, 2^28806353 is an apocalyptic number.

It is an amenable number.

28806353 is a deficient number, since it is larger than the sum of its proper divisors (136735).

28806353 is a wasteful number, since it uses less digits than its factorization.

28806353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136734.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 28806353 is about 5367.1550191885. The cubic root of 28806353 is about 306.5463100218.

The spelling of 28806353 in words is "twenty-eight million, eight hundred six thousand, three hundred fifty-three".