836785740 has 144 divisors (see below), whose sum is σ = 2739157344. Its totient is φ = 190310400.

The previous prime is 836785727. The next prime is 836785751. The reversal of 836785740 is 47587638.

It is a self number, because there is not a number n which added to its sum of digits gives 836785740.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 707950 + ... + 709130.

It is an arithmetic number, because the mean of its divisors is an integer number (19021926).

Almost surely, 2^836785740 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 836785740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1369578672).

836785740 is an abundant number, since it is smaller than the sum of its proper divisors (1902371604).

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

836785740 is a wasteful number, since it uses less digits than its factorization.

836785740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 836785740 is about 28927.2490914708. The cubic root of 836785740 is about 942.3337740138. Note that the first 3 decimals are identical.

The spelling of 836785740 in words is "eight hundred thirty-six million, seven hundred eighty-five thousand, seven hundred forty".