28295849 has 4 divisors (see below), whose sum is σ = 28953936. Its totient is φ = 27637764.

The previous prime is 28295821. The next prime is 28295867. The reversal of 28295849 is 94859282.

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 28295849 - 2⁸ = 28295593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28295879) 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, 328979 + ... + 329064.

It is an arithmetic number, because the mean of its divisors is an integer number (7238484).

Almost surely, 2^28295849 is an apocalyptic number.

It is an amenable number.

28295849 is a deficient number, since it is larger than the sum of its proper divisors (658087).

28295849 is an equidigital number, since it uses as much as digits as its factorization.

28295849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658086.

The product of its digits is 414720, while the sum is 47.

The square root of 28295849 is about 5319.3842688792. The cubic root of 28295849 is about 304.7246426374.

The spelling of 28295849 in words is "twenty-eight million, two hundred ninety-five thousand, eight hundred forty-nine".