9857538 has 28 divisors (see below), whose sum is σ = 22172598. Its totient is φ = 3285360.

The previous prime is 9857537. The next prime is 9857579. The reversal of 9857538 is 8357589.

It can be written as a sum of positive squares in only one way, i.e., 7144929 + 2712609 = 2673^2 + 1647^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9857493 and 9857502.

It is not an unprimeable number, because it can be changed into a prime (9857537) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1923 + ... + 4838.

Almost surely, 2^9857538 is an apocalyptic number.

9857538 is an abundant number, since it is smaller than the sum of its proper divisors (12315060).

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

9857538 is an equidigital number, since it uses as much as digits as its factorization.

9857538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781 (or 6766 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 9857538 is about 3139.6716388820. The cubic root of 9857538 is about 214.4154882486.

The spelling of 9857538 in words is "nine million, eight hundred fifty-seven thousand, five hundred thirty-eight".