7540731 has 24 divisors (see below), whose sum is σ = 12093120. Its totient is φ = 4489200.

The previous prime is 7540721. The next prime is 7540751. The reversal of 7540731 is 1370457.

7540731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7540731 - 2⁵ = 7540699 is a prime.

It is a super-2 number, since 2×7540731² = 113725248028722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7540695 and 7540704.

It is not an unprimeable number, because it can be changed into a prime (7540721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5196 + ... + 6486.

It is an arithmetic number, because the mean of its divisors is an integer number (503880).

Almost surely, 2^7540731 is an apocalyptic number.

7540731 is a deficient number, since it is larger than the sum of its proper divisors (4552389).

7540731 is a wasteful number, since it uses less digits than its factorization.

7540731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 7540731 is about 2746.0391475724. The cubic root of 7540731 is about 196.0970902427.

The spelling of 7540731 in words is "seven million, five hundred forty thousand, seven hundred thirty-one".