840468072 has 16 divisors (see below), whose sum is σ = 2101170240. Its totient is φ = 280156016.

The previous prime is 840468019. The next prime is 840468073. The reversal of 840468072 is 270864048.

It is a self number, because there is not a number n which added to its sum of digits gives 840468072.

It is not an unprimeable number, because it can be changed into a prime (840468073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17509728 + ... + 17509775.

It is an arithmetic number, because the mean of its divisors is an integer number (131323140).

Almost surely, 2^840468072 is an apocalyptic number.

It is an amenable number.

840468072 is an abundant number, since it is smaller than the sum of its proper divisors (1260702168).

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

840468072 is a wasteful number, since it uses less digits than its factorization.

840468072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35019512 (or 35019508 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 840468072 is about 28990.8273769480. The cubic root of 840468072 is about 943.7140191127.

The spelling of 840468072 in words is "eight hundred forty million, four hundred sixty-eight thousand, seventy-two".