7284289 has 4 divisors (see below), whose sum is σ = 7293060. Its totient is φ = 7275520.

The previous prime is 7284259. The next prime is 7284293. The reversal of 7284289 is 9824827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9824827 = 17 ⋅577931.

It can be written as a sum of positive squares in 2 ways, for example, as 1034289 + 6250000 = 1017^2 + 2500^2 .

It is a cyclic number.

It is not a de Polignac number, because 7284289 - 2⁵ = 7284257 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7284229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2992 + ... + 4849.

It is an arithmetic number, because the mean of its divisors is an integer number (1823265).

Almost surely, 2^7284289 is an apocalyptic number.

It is an amenable number.

7284289 is a deficient number, since it is larger than the sum of its proper divisors (8771).

7284289 is an equidigital number, since it uses as much as digits as its factorization.

7284289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8770.

The product of its digits is 64512, while the sum is 40.

The square root of 7284289 is about 2698.9422001962. The cubic root of 7284289 is about 193.8484752267.

The spelling of 7284289 in words is "seven million, two hundred eighty-four thousand, two hundred eighty-nine".