7281369 has 6 divisors (see below), whose sum is σ = 10517546. Its totient is φ = 4854240.

The previous prime is 7281353. The next prime is 7281401. The reversal of 7281369 is 9631827.

It can be written as a sum of positive squares in only one way, i.e., 4995225 + 2286144 = 2235^2 + 1512^2 .

It is not a de Polignac number, because 7281369 - 2⁴ = 7281353 is a prime.

It is a super-2 number, since 2×7281369² = 106036669028322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7286369) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 404512 + ... + 404529.

Almost surely, 2^7281369 is an apocalyptic number.

It is an amenable number.

7281369 is a deficient number, since it is larger than the sum of its proper divisors (3236177).

7281369 is a wasteful number, since it uses less digits than its factorization.

7281369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809047 (or 809044 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 7281369 is about 2698.4011932995. The cubic root of 7281369 is about 193.8225695550.

The spelling of 7281369 in words is "seven million, two hundred eighty-one thousand, three hundred sixty-nine".