9725538 has 8 divisors (see below), whose sum is σ = 19451088. Its totient is φ = 3241844.

The previous prime is 9725531. The next prime is 9725539. The reversal of 9725538 is 8355279.

It is a sphenic number, since it is the product of 3 distinct primes.

9725538 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 9725496 and 9725505.

It is not an unprimeable number, because it can be changed into a prime (9725531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810456 + ... + 810467.

It is an arithmetic number, because the mean of its divisors is an integer number (2431386).

Almost surely, 2^9725538 is an apocalyptic number.

9725538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9725538 is a wasteful number, since it uses less digits than its factorization.

9725538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620928.

The product of its digits is 75600, while the sum is 39.

The square root of 9725538 is about 3118.5794843165. The cubic root of 9725538 is about 213.4541215930.

The spelling of 9725538 in words is "nine million, seven hundred twenty-five thousand, five hundred thirty-eight".