917028 has 48 divisors (see below), whose sum is σ = 2719360. Its totient is φ = 261792.

The previous prime is 917003. The next prime is 917039. The reversal of 917028 is 820719.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 916992 and 917010.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 917028.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150 + ... + 1362.

2⁹¹⁷⁰²⁸ 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 917028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359680).

917028 is an abundant number, since it is smaller than the sum of its proper divisors (1802332).

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

917028 is a wasteful number, since it uses less digits than its factorization.

917028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233 (or 1225 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 917028 is about 957.6157893435. The cubic root of 917028 is about 97.1540401527.

The spelling of 917028 in words is "nine hundred seventeen thousand, twenty-eight".