9872520 has 192 divisors, whose sum is σ = 36443520. Its totient is φ = 2128896.

The previous prime is 9872519. The next prime is 9872521. The reversal of 9872520 is 252789.

It is an interprime number because it is at equal distance from previous prime (9872519) and next prime (9872521).

It is not an unprimeable number, because it can be changed into a prime (9872521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135204 + ... + 135276.

It is an arithmetic number, because the mean of its divisors is an integer number (189810).

Almost surely, 2^9872520 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 9872520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18221760).

9872520 is an abundant number, since it is smaller than the sum of its proper divisors (26571000).

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

9872520 is a wasteful number, since it uses less digits than its factorization.

9872520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 9872520 is about 3142.0566513034. The cubic root of 9872520 is about 214.5240598742.

The spelling of 9872520 in words is "nine million, eight hundred seventy-two thousand, five hundred twenty".