9124728 has 16 divisors (see below), whose sum is σ = 22811880. Its totient is φ = 3041568.

The previous prime is 9124727. The next prime is 9124777. The reversal of 9124728 is 8274219.

It is a happy number.

It is a super-2 number, since 2×9124728² = 166521322147968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9124727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190075 + ... + 190122.

Almost surely, 2^9124728 is an apocalyptic number.

It is an amenable number.

9124728 is an abundant number, since it is smaller than the sum of its proper divisors (13687152).

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

9124728 is a wasteful number, since it uses less digits than its factorization.

9124728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380206 (or 380202 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 9124728 is about 3020.7164713028. The cubic root of 9124728 is about 208.9648834875.

The spelling of 9124728 in words is "nine million, one hundred twenty-four thousand, seven hundred twenty-eight".