7530140 has 24 divisors (see below), whose sum is σ = 16359840. Its totient is φ = 2907968.

The previous prime is 7530139. The next prime is 7530151. The reversal of 7530140 is 410357.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5912 + ... + 7071.

It is an arithmetic number, because the mean of its divisors is an integer number (681660).

Almost surely, 2^7530140 is an apocalyptic number.

It is an amenable number.

7530140 is an abundant number, since it is smaller than the sum of its proper divisors (8829700).

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

7530140 is a wasteful number, since it uses less digits than its factorization.

7530140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13021 (or 13019 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 7530140 is about 2744.1100561020. The cubic root of 7530140 is about 196.0052407317.

Adding to 7530140 its reverse (410357), we get a palindrome (7940497).

The spelling of 7530140 in words is "seven million, five hundred thirty thousand, one hundred forty".