28634297 has 4 divisors (see below), whose sum is σ = 29558016. Its totient is φ = 27710580.

The previous prime is 28634269. The next prime is 28634299. The reversal of 28634297 is 79243682.

It is a happy number.

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 28634297 - 2²⁴ = 11857081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28634299) 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, 461813 + ... + 461874.

It is an arithmetic number, because the mean of its divisors is an integer number (7389504).

Almost surely, 2^28634297 is an apocalyptic number.

It is an amenable number.

28634297 is a deficient number, since it is larger than the sum of its proper divisors (923719).

28634297 is an equidigital number, since it uses as much as digits as its factorization.

28634297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923718.

The product of its digits is 145152, while the sum is 41.

The square root of 28634297 is about 5351.1024097844. The cubic root of 28634297 is about 305.9347725751.

The spelling of 28634297 in words is "twenty-eight million, six hundred thirty-four thousand, two hundred ninety-seven".