9729740 has 48 divisors (see below), whose sum is σ = 21282912. Its totient is φ = 3734016.

The previous prime is 9729697. The next prime is 9729743. The reversal of 9729740 is 479279.

It is a happy number.

9729740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×9729740³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9729694 and 9729703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9729743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70952 + ... + 71088.

It is an arithmetic number, because the mean of its divisors is an integer number (443394).

Almost surely, 2^9729740 is an apocalyptic number.

It is an amenable number.

9729740 is an abundant number, since it is smaller than the sum of its proper divisors (11553172).

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

9729740 is a wasteful number, since it uses less digits than its factorization.

9729740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 9729740 is about 3119.2531157314. The cubic root of 9729740 is about 213.4848587126.

The spelling of 9729740 in words is "nine million, seven hundred twenty-nine thousand, seven hundred forty".