7130640 has 160 divisors (see below), whose sum is σ = 25105536. Its totient is φ = 1658880.

The previous prime is 7130579. The next prime is 7130687. The reversal of 7130640 is 460317.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97644 + ... + 97716.

Almost surely, 2^7130640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7130640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12552768).

7130640 is an abundant number, since it is smaller than the sum of its proper divisors (17974896).

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

7130640 is a wasteful number, since it uses less digits than its factorization.

7130640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 7130640 is about 2670.3258228164. The cubic root of 7130640 is about 192.4758163806.

Adding to 7130640 its reverse (460317), we get a palindrome (7590957).

The spelling of 7130640 in words is "seven million, one hundred thirty thousand, six hundred forty".