9640540 has 48 divisors (see below), whose sum is σ = 24921792. Its totient is φ = 3050496.

The previous prime is 9640529. The next prime is 9640549. The reversal of 9640540 is 450469.

It is a super-2 number, since 2×9640540² = 185880022983200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 9640499 and 9640508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829 + ... + 4468.

It is an arithmetic number, because the mean of its divisors is an integer number (519204).

Almost surely, 2^9640540 is an apocalyptic number.

It is an amenable number.

9640540 is an abundant number, since it is smaller than the sum of its proper divisors (15281252).

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

9640540 is a wasteful number, since it uses less digits than its factorization.

9640540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326 (or 5324 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 9640540 is about 3104.9218991788. The cubic root of 9640540 is about 212.8304616069.

The spelling of 9640540 in words is "nine million, six hundred forty thousand, five hundred forty".