836740 has 48 divisors (see below), whose sum is σ = 1959552. Its totient is φ = 298496.

The previous prime is 836729. The next prime is 836747. The reversal of 836740 is 47638.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 836699 and 836708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (836747) by changing a digit.

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, 7767 + ... + 7873.

It is an arithmetic number, because the mean of its divisors is an integer number (40824).

2⁸³⁶⁷⁴⁰ 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 836740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (979776).

836740 is an abundant number, since it is smaller than the sum of its proper divisors (1122812).

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

836740 is a wasteful number, since it uses less digits than its factorization.

836740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 836740 is about 914.7349342842. The cubic root of 836740 is about 94.2316603895.

The spelling of 836740 in words is "eight hundred thirty-six thousand, seven hundred forty".