28484849 has 4 divisors (see below), whose sum is σ = 28910064. Its totient is φ = 28059636.

The previous prime is 28484839. The next prime is 28484851. The reversal of 28484849 is 94848482.

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 28484849 - 2⁸ = 28484593 is a prime.

It is a super-2 number, since 2×28484849² = 1622773245105602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28484839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212507 + ... + 212640.

It is an arithmetic number, because the mean of its divisors is an integer number (7227516).

Almost surely, 2^28484849 is an apocalyptic number.

It is an amenable number.

28484849 is a deficient number, since it is larger than the sum of its proper divisors (425215).

28484849 is an equidigital number, since it uses as much as digits as its factorization.

28484849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425214.

The product of its digits is 589824, while the sum is 47.

The square root of 28484849 is about 5337.1199162095. The cubic root of 28484849 is about 305.4015994342.

The spelling of 28484849 in words is "twenty-eight million, four hundred eighty-four thousand, eight hundred forty-nine".