840928 has 24 divisors (see below), whose sum is σ = 1806840. Its totient is φ = 382080.

The previous prime is 840923. The next prime is 840929. The reversal of 840928 is 829048.

It is a self number, because there is not a number n which added to its sum of digits gives 840928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843 + ... + 1546.

It is an arithmetic number, because the mean of its divisors is an integer number (75285).

2⁸⁴⁰⁹²⁸ is an apocalyptic number.

840928 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

840928 is an abundant number, since it is smaller than the sum of its proper divisors (965912).

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

840928 is a wasteful number, since it uses less digits than its factorization.

840928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 840928 is about 917.0212647480. The cubic root of 840928 is about 94.3886130093.

It can be divided in two parts, 84092 and 8, that added together give a square (84100 = 290²).

The spelling of 840928 in words is "eight hundred forty thousand, nine hundred twenty-eight".