840328 has 16 divisors (see below), whose sum is σ = 1644480. Its totient is φ = 401808.

The previous prime is 840319. The next prime is 840331. The reversal of 840328 is 823048.

It is a super-2 number, since 2×840328² = 1412302295168, which contains 22 as substring.

It is an unprimeable number.

840328 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2100 + ... + 2467.

It is an arithmetic number, because the mean of its divisors is an integer number (102780).

2⁸⁴⁰³²⁸ is an apocalyptic number.

It is an amenable number.

840328 is a deficient number, since it is larger than the sum of its proper divisors (804152).

840328 is a wasteful number, since it uses less digits than its factorization.

840328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596 (or 4592 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 840328 is about 916.6940601967. The cubic root of 840328 is about 94.3661589894.

It can be divided in two parts, 8 and 40328, that multiplied together give a square (322624 = 568²).

The spelling of 840328 in words is "eight hundred forty thousand, three hundred twenty-eight".