9872920 has 32 divisors (see below), whose sum is σ = 23522400. Its totient is φ = 3716608.

The previous prime is 9872899. The next prime is 9872921. The reversal of 9872920 is 292789.

It is a self number, because there is not a number n which added to its sum of digits gives 9872920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872921) 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, 6580 + ... + 7939.

It is an arithmetic number, because the mean of its divisors is an integer number (735075).

Almost surely, 2^9872920 is an apocalyptic number.

It is an amenable number.

9872920 is an abundant number, since it is smaller than the sum of its proper divisors (13649480).

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

9872920 is a wasteful number, since it uses less digits than its factorization.

9872920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14547 (or 14543 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 9872920 is about 3142.1203032347. The cubic root of 9872920 is about 214.5269570901.

The spelling of 9872920 in words is "nine million, eight hundred seventy-two thousand, nine hundred twenty".