9729136 has 20 divisors (see below), whose sum is σ = 19311264. Its totient is φ = 4745600.

The previous prime is 9729131. The next prime is 9729143. The reversal of 9729136 is 6319279.

It is a junction number, because it is equal to n+sod(n) for n = 9729095 and 9729104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9729131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6760 + ... + 8071.

Almost surely, 2^9729136 is an apocalyptic number.

It is an amenable number.

9729136 is a deficient number, since it is larger than the sum of its proper divisors (9582128).

9729136 is a wasteful number, since it uses less digits than its factorization.

9729136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14880 (or 14874 counting only the distinct ones).

The product of its digits is 20412, while the sum is 37.

The square root of 9729136 is about 3119.1562961801. The cubic root of 9729136 is about 213.4804410707.

The spelling of 9729136 in words is "nine million, seven hundred twenty-nine thousand, one hundred thirty-six".