9725920 has 48 divisors (see below), whose sum is σ = 23269680. Its totient is φ = 3841024.

The previous prime is 9725879. The next prime is 9725923. The reversal of 9725920 is 295279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9725923) 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 7 ways as a sum of consecutive naturals, for example, 13899 + ... + 14581.

It is an arithmetic number, because the mean of its divisors is an integer number (484785).

Almost surely, 2^9725920 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 9725920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11634840).

9725920 is an abundant number, since it is smaller than the sum of its proper divisors (13543760).

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

9725920 is a wasteful number, since it uses less digits than its factorization.

9725920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 9725920 is about 3118.6407295487. The cubic root of 9725920 is about 213.4569162425.

It can be divided in two parts, 97259 and 20, that added together give a palindrome (97279).

The spelling of 9725920 in words is "nine million, seven hundred twenty-five thousand, nine hundred twenty".