9117028 has 6 divisors (see below), whose sum is σ = 15954806. Its totient is φ = 4558512.

The previous prime is 9117011. The next prime is 9117029. The reversal of 9117028 is 8207119.

It can be written as a sum of positive squares in only one way, i.e., 4631104 + 4485924 = 2152^2 + 2118^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9116987 and 9117005.

It is not an unprimeable number, because it can be changed into a prime (9117029) by changing a digit.

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 as a sum of consecutive naturals, namely, 1139625 + ... + 1139632.

Almost surely, 2^9117028 is an apocalyptic number.

It is an amenable number.

9117028 is a deficient number, since it is larger than the sum of its proper divisors (6837778).

9117028 is a wasteful number, since it uses less digits than its factorization.

9117028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279261 (or 2279259 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 9117028 is about 3019.4416702430. The cubic root of 9117028 is about 208.9060878567.

Subtracting from 9117028 its reverse (8207119), we obtain a palindrome (909909).

The spelling of 9117028 in words is "nine million, one hundred seventeen thousand, twenty-eight".