7140318 has 16 divisors (see below), whose sum is σ = 14307840. Its totient is φ = 2375576.

The previous prime is 7140317. The next prime is 7140347. The reversal of 7140318 is 8130417.

It is a super-2 number, since 2×7140318² = 101968282282248, which contains 22 as substring.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7140311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4243 + ... + 5681.

It is an arithmetic number, because the mean of its divisors is an integer number (894240).

Almost surely, 2^7140318 is an apocalyptic number.

7140318 is an abundant number, since it is smaller than the sum of its proper divisors (7167522).

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

7140318 is a wasteful number, since it uses less digits than its factorization.

7140318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 7140318 is about 2672.1373467694. The cubic root of 7140318 is about 192.5628557318.

Subtracting 7140318 from its reverse (8130417), we obtain a palindrome (990099).

The spelling of 7140318 in words is "seven million, one hundred forty thousand, three hundred eighteen".