840975872 has 160 divisors (see below), whose sum is σ = 2003443200. Its totient is φ = 348364800.

The previous prime is 840975859. The next prime is 840975913. The reversal of 840975872 is 278579048.

It is a self number, because there is not a number n which added to its sum of digits gives 840975872.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3103097 + ... + 3103367.

It is an arithmetic number, because the mean of its divisors is an integer number (12521520).

Almost surely, 2^840975872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840975872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1001721600).

840975872 is an abundant number, since it is smaller than the sum of its proper divisors (1162467328).

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

840975872 is a wasteful number, since it uses less digits than its factorization.

840975872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 840975872 is about 28999.5839970162. The cubic root of 840975872 is about 943.9040408061.

The spelling of 840975872 in words is "eight hundred forty million, nine hundred seventy-five thousand, eight hundred seventy-two".