9726138 has 24 divisors (see below), whose sum is σ = 22183200. Its totient is φ = 3071304.

The previous prime is 9726137. The next prime is 9726149. The reversal of 9726138 is 8316279.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9726137) 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 11 ways as a sum of consecutive naturals, for example, 13878 + ... + 14561.

It is an arithmetic number, because the mean of its divisors is an integer number (924300).

Almost surely, 2^9726138 is an apocalyptic number.

9726138 is an abundant number, since it is smaller than the sum of its proper divisors (12457062).

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

9726138 is a wasteful number, since it uses less digits than its factorization.

9726138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28466 (or 28463 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 9726138 is about 3118.6756804772. The cubic root of 9726138 is about 213.4585110619.

The spelling of 9726138 in words is "nine million, seven hundred twenty-six thousand, one hundred thirty-eight".