840867028 has 24 divisors (see below), whose sum is σ = 1536575040. Its totient is φ = 401871360.

The previous prime is 840867023. The next prime is 840867029. The reversal of 840867028 is 820768048.

840867028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840867023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193908 + ... + 198196.

It is an arithmetic number, because the mean of its divisors is an integer number (64023960).

Almost surely, 2^840867028 is an apocalyptic number.

It is an amenable number.

840867028 is a deficient number, since it is larger than the sum of its proper divisors (695708012).

840867028 is a wasteful number, since it uses less digits than its factorization.

840867028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447 (or 6445 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 840867028 is about 28997.7072886806. The cubic root of 840867028 is about 943.8633171946.

The spelling of 840867028 in words is "eight hundred forty million, eight hundred sixty-seven thousand, twenty-eight".