840836108 has 48 divisors (see below), whose sum is σ = 1781633280. Its totient is φ = 339183936.

The previous prime is 840836107. The next prime is 840836111. The reversal of 840836108 is 801638048.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (840836107) 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 15 ways as a sum of consecutive naturals, for example, 78491 + ... + 88557.

It is an arithmetic number, because the mean of its divisors is an integer number (37117360).

Almost surely, 2^840836108 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 840836108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890816640).

840836108 is an abundant number, since it is smaller than the sum of its proper divisors (940797172).

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

840836108 is a wasteful number, since it uses less digits than its factorization.

840836108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10254 (or 10252 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 840836108 is about 28997.1741381811. The cubic root of 840836108 is about 943.8517479411.

The spelling of 840836108 in words is "eight hundred forty million, eight hundred thirty-six thousand, one hundred eight".