840767328 has 72 divisors (see below), whose sum is σ = 2516787000. Its totient is φ = 265503744.

The previous prime is 840767327. The next prime is 840767359. The reversal of 840767328 is 823767048.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840767321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71353 + ... + 82296.

It is an arithmetic number, because the mean of its divisors is an integer number (34955375).

Almost surely, 2^840767328 is an apocalyptic number.

It is an amenable number.

840767328 is an abundant number, since it is smaller than the sum of its proper divisors (1676019672).

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

840767328 is a wasteful number, since it uses less digits than its factorization.

840767328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153684 (or 153673 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 840767328 is about 28995.9881362922. The cubic root of 840767328 is about 943.8260116956.

The spelling of 840767328 in words is "eight hundred forty million, seven hundred sixty-seven thousand, three hundred twenty-eight".