9729426 has 32 divisors (see below), whose sum is σ = 22514688. Its totient is φ = 2745360.

The previous prime is 9729397. The next prime is 9729427. The reversal of 9729426 is 6249279.

It is not an unprimeable number, because it can be changed into a prime (9729427) 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 15 ways as a sum of consecutive naturals, for example, 2091 + ... + 4881.

It is an arithmetic number, because the mean of its divisors is an integer number (703584).

Almost surely, 2^9729426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9729426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11257344).

9729426 is an abundant number, since it is smaller than the sum of its proper divisors (12785262).

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

9729426 is a wasteful number, since it uses less digits than its factorization.

9729426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886.

The product of its digits is 54432, while the sum is 39.

The square root of 9729426 is about 3119.2027827636. The cubic root of 9729426 is about 213.4825621468.

The spelling of 9729426 in words is "nine million, seven hundred twenty-nine thousand, four hundred twenty-six".