9992540 has 48 divisors (see below), whose sum is σ = 22063104. Its totient is φ = 3796800.

The previous prime is 9992533. The next prime is 9992569. The reversal of 9992540 is 452999.

9992540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 9992494 and 9992503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43907 + ... + 44133.

It is an arithmetic number, because the mean of its divisors is an integer number (459648).

Almost surely, 2^9992540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9992540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11031552).

9992540 is an abundant number, since it is smaller than the sum of its proper divisors (12070564).

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

9992540 is a wasteful number, since it uses less digits than its factorization.

9992540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 9992540 is about 3161.0979105368. The cubic root of 9992540 is about 215.3898820664.

The spelling of 9992540 in words is "nine million, nine hundred ninety-two thousand, five hundred forty".