7318386 has 12 divisors (see below), whose sum is σ = 15856542. Its totient is φ = 2439456.

The previous prime is 7318379. The next prime is 7318397. The reversal of 7318386 is 6838137.

It can be written as a sum of positive squares in only one way, i.e., 7049025 + 269361 = 2655^2 + 519^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7318386.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203271 + ... + 203306.

Almost surely, 2^7318386 is an apocalyptic number.

7318386 is an abundant number, since it is smaller than the sum of its proper divisors (8538156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7318386 is a wasteful number, since it uses less digits than its factorization.

7318386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406585 (or 406582 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 7318386 is about 2705.2515594673. The cubic root of 7318386 is about 194.1504660440.

Subtracting from 7318386 its reverse (6838137), we obtain a square (480249 = 693²).

The spelling of 7318386 in words is "seven million, three hundred eighteen thousand, three hundred eighty-six".