840678336 has 252 divisors, whose sum is σ = 2629448640. Its totient is φ = 256481280.

The previous prime is 840678329. The next prime is 840678343. The reversal of 840678336 is 633876048.

840678336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (840678329) and next prime (840678343).

It is a junction number, because it is equal to n+sod(n) for n = 840678291 and 840678300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9445780 + ... + 9445868.

It is an arithmetic number, because the mean of its divisors is an integer number (10434320).

Almost surely, 2^840678336 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 840678336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314724320).

840678336 is an abundant number, since it is smaller than the sum of its proper divisors (1788770304).

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

840678336 is a wasteful number, since it uses less digits than its factorization.

840678336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 840678336 is about 28994.4535385649. The cubic root of 840678336 is about 943.7927103984.

The spelling of 840678336 in words is "eight hundred forty million, six hundred seventy-eight thousand, three hundred thirty-six".