7312740 has 48 divisors (see below), whose sum is σ = 20594112. Its totient is φ = 1938816.

The previous prime is 7312699. The next prime is 7312751. The reversal of 7312740 is 472137.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7312740.

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 15 ways as a sum of consecutive naturals, for example, 18222 + ... + 18618.

It is an arithmetic number, because the mean of its divisors is an integer number (429044).

Almost surely, 2^7312740 is an apocalyptic number.

It is an amenable number.

7312740 is an abundant number, since it is smaller than the sum of its proper divisors (13281372).

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

7312740 is a wasteful number, since it uses less digits than its factorization.

7312740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 7312740 is about 2704.2078322496. The cubic root of 7312740 is about 194.1005253629.

Adding to 7312740 its reverse (472137), we get a palindrome (7784877).

The spelling of 7312740 in words is "seven million, three hundred twelve thousand, seven hundred forty".