7228489 has 4 divisors (see below), whose sum is σ = 7233940. Its totient is φ = 7223040.

The previous prime is 7228483. The next prime is 7228499. The reversal of 7228489 is 9848227.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9848227 = 197 ⋅49991.

It can be written as a sum of positive squares in 2 ways, for example, as 5212089 + 2016400 = 2283^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 7228489 - 2⁹ = 7227977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7228483) 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, 697 + ... + 3865.

It is an arithmetic number, because the mean of its divisors is an integer number (1808485).

Almost surely, 2^7228489 is an apocalyptic number.

It is an amenable number.

7228489 is a deficient number, since it is larger than the sum of its proper divisors (5451).

7228489 is a wasteful number, since it uses less digits than its factorization.

7228489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450.

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

The square root of 7228489 is about 2688.5849437948. The cubic root of 7228489 is about 193.3522253305.

It can be divided in two parts, 72 and 28489, that added together give a 4-th power (28561 = 13⁴).

The spelling of 7228489 in words is "seven million, two hundred twenty-eight thousand, four hundred eighty-nine".