7312540 has 12 divisors (see below), whose sum is σ = 15356376. Its totient is φ = 2925008.

The previous prime is 7312531. The next prime is 7312541. The reversal of 7312540 is 452137.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7312541) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 182794 + ... + 182833.

It is an arithmetic number, because the mean of its divisors is an integer number (1279698).

Almost surely, 2^7312540 is an apocalyptic number.

It is an amenable number.

7312540 is an abundant number, since it is smaller than the sum of its proper divisors (8043836).

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

7312540 is a wasteful number, since it uses less digits than its factorization.

7312540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365636 (or 365634 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 7312540 is about 2704.1708525905. The cubic root of 7312540 is about 194.0987558274.

Adding to 7312540 its reverse (452137), we get a palindrome (7764677).

The spelling of 7312540 in words is "seven million, three hundred twelve thousand, five hundred forty".