9136728 has 48 divisors (see below), whose sum is σ = 24986520. Its totient is φ = 3015936.

The previous prime is 9136717. The next prime is 9136741. The reversal of 9136728 is 8276319.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 9136692 and 9136701.

It is a congruent number.

It is an unprimeable number.

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, 7575 + ... + 8697.

Almost surely, 2^9136728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9136728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12493260).

9136728 is an abundant number, since it is smaller than the sum of its proper divisors (15849792).

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

9136728 is a wasteful number, since it uses less digits than its factorization.

9136728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248 (or 1241 counting only the distinct ones).

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

The square root of 9136728 is about 3022.7021024243. The cubic root of 9136728 is about 209.0564471358.

The spelling of 9136728 in words is "nine million, one hundred thirty-six thousand, seven hundred twenty-eight".