7130440 has 16 divisors (see below), whose sum is σ = 16043580. Its totient is φ = 2852160.

The previous prime is 7130423. The next prime is 7130441. The reversal of 7130440 is 440317.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6959044 + 171396 = 2638^2 + 414^2 .

It is not an unprimeable number, because it can be changed into a prime (7130441) 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, 89091 + ... + 89170.

Almost surely, 2^7130440 is an apocalyptic number.

It is an amenable number.

7130440 is an abundant number, since it is smaller than the sum of its proper divisors (8913140).

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

7130440 is a wasteful number, since it uses less digits than its factorization.

7130440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178272 (or 178268 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 7130440 is about 2670.2883739402. The cubic root of 7130440 is about 192.4740168450.

Adding to 7130440 its reverse (440317), we get a palindrome (7570757).

The spelling of 7130440 in words is "seven million, one hundred thirty thousand, four hundred forty".