9930726 has 72 divisors (see below), whose sum is σ = 24583104. Its totient is φ = 2877120.

The previous prime is 9930707. The next prime is 9930773. The reversal of 9930726 is 6270399.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 268380 + ... + 268416.

It is an arithmetic number, because the mean of its divisors is an integer number (341432).

Almost surely, 2^9930726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9930726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12291552).

9930726 is an abundant number, since it is smaller than the sum of its proper divisors (14652378).

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

9930726 is a wasteful number, since it uses less digits than its factorization.

9930726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 9930726 is about 3151.3054437804. The cubic root of 9930726 is about 214.9448281004.

The spelling of 9930726 in words is "nine million, nine hundred thirty thousand, seven hundred twenty-six".