7318445 has 8 divisors (see below), whose sum is σ = 8860536. Its totient is φ = 5802496.

The previous prime is 7318429. The next prime is 7318453. The reversal of 7318445 is 5448137.

It can be written as a sum of positive squares in 4 ways, for example, as 417316 + 6901129 = 646^2 + 2627^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7318445 - 2⁴ = 7318429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5912 + ... + 7041.

It is an arithmetic number, because the mean of its divisors is an integer number (1107567).

Almost surely, 2^7318445 is an apocalyptic number.

It is an amenable number.

7318445 is a deficient number, since it is larger than the sum of its proper divisors (1542091).

7318445 is a wasteful number, since it uses less digits than its factorization.

7318445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13071.

The product of its digits is 13440, while the sum is 32.

The square root of 7318445 is about 2705.2624641613. The cubic root of 7318445 is about 194.1509877823.

The spelling of 7318445 in words is "seven million, three hundred eighteen thousand, four hundred forty-five".