9028440 has 96 divisors (see below), whose sum is σ = 30326400. Its totient is φ = 2327040.

The previous prime is 9028433. The next prime is 9028499. The reversal of 9028440 is 448209.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10756 + ... + 11564.

It is an arithmetic number, because the mean of its divisors is an integer number (315900).

Almost surely, 2^9028440 is an apocalyptic number.

9028440 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9028440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15163200).

9028440 is an abundant number, since it is smaller than the sum of its proper divisors (21297960).

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

9028440 is a wasteful number, since it uses less digits than its factorization.

9028440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 9028440 is about 3004.7362613048. The cubic root of 9028440 is about 208.2272540846.

The spelling of 9028440 in words is "nine million, twenty-eight thousand, four hundred forty".