28238495 has 4 divisors (see below), whose sum is σ = 33886200. Its totient is φ = 22590792.

The previous prime is 28238447. The next prime is 28238519. The reversal of 28238495 is 59483282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28238495 - 2¹⁴ = 28222111 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2823845 + ... + 2823854.

It is an arithmetic number, because the mean of its divisors is an integer number (8471550).

Almost surely, 2^28238495 is an apocalyptic number.

28238495 is a deficient number, since it is larger than the sum of its proper divisors (5647705).

28238495 is an equidigital number, since it uses as much as digits as its factorization.

28238495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5647704.

The product of its digits is 138240, while the sum is 41.

The square root of 28238495 is about 5313.9904967924. The cubic root of 28238495 is about 304.5186171427.

The spelling of 28238495 in words is "twenty-eight million, two hundred thirty-eight thousand, four hundred ninety-five".