9725140 has 24 divisors (see below), whose sum is σ = 20492640. Its totient is φ = 3876768.

The previous prime is 9725087. The next prime is 9725141. The reversal of 9725140 is 415279.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9725099 and 9725108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9725141) 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, 6939 + ... + 8221.

It is an arithmetic number, because the mean of its divisors is an integer number (853860).

Almost surely, 2^9725140 is an apocalyptic number.

It is an amenable number.

9725140 is an abundant number, since it is smaller than the sum of its proper divisors (10767500).

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

9725140 is a wasteful number, since it uses less digits than its factorization.

9725140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671 (or 1669 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 9725140 is about 3118.5156725596. The cubic root of 9725140 is about 213.4512098124.

The spelling of 9725140 in words is "nine million, seven hundred twenty-five thousand, one hundred forty".