9927640 has 32 divisors (see below), whose sum is σ = 22441680. Its totient is φ = 3952512.

The previous prime is 9927637. The next prime is 9927641. The reversal of 9927640 is 467299.

It is a self number, because there is not a number n which added to its sum of digits gives 9927640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9927641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10882 + ... + 11758.

Almost surely, 2^9927640 is an apocalyptic number.

It is an amenable number.

9927640 is an abundant number, since it is smaller than the sum of its proper divisors (12514040).

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

9927640 is a wasteful number, since it uses less digits than its factorization.

9927640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 9927640 is about 3150.8157673847. The cubic root of 9927640 is about 214.9225608979.

The spelling of 9927640 in words is "nine million, nine hundred twenty-seven thousand, six hundred forty".