9162728 has 32 divisors (see below), whose sum is σ = 18419400. Its totient is φ = 4257792.

The previous prime is 9162709. The next prime is 9162737. The reversal of 9162728 is 8272619.

It is a happy number.

9162728 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 3027²-1.

It can be written as a sum of positive squares in 4 ways, for example, as 8076964 + 1085764 = 2842^2 + 1042^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11726 + ... + 12482.

Almost surely, 2^9162728 is an apocalyptic number.

It is an amenable number.

9162728 is an abundant number, since it is smaller than the sum of its proper divisors (9256672).

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

9162728 is a wasteful number, since it uses less digits than its factorization.

9162728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 865 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 9162728 is about 3026.9998348199. Note that the first 3 decimals coincide. The cubic root of 9162728 is about 209.2545603603.

The spelling of 9162728 in words is "nine million, one hundred sixty-two thousand, seven hundred twenty-eight".