802840 has 16 divisors (see below), whose sum is σ = 1806480. Its totient is φ = 321120.

The previous prime is 802831. The next prime is 802873. The reversal of 802840 is 48208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9996 + ... + 10075.

It is an arithmetic number, because the mean of its divisors is an integer number (112905).

2⁸⁰²⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

802840 is an abundant number, since it is smaller than the sum of its proper divisors (1003640).

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

802840 is a wasteful number, since it uses less digits than its factorization.

802840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20082 (or 20078 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 802840 is about 896.0133927571. The cubic root of 802840 is about 92.9414978735.

The spelling of 802840 in words is "eight hundred two thousand, eight hundred forty".