834215808 has 64 divisors (see below), whose sum is σ = 2230715520. Its totient is φ = 276211200.

The previous prime is 834215803. The next prime is 834215821. The reversal of 834215808 is 808512438.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834215803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50791 + ... + 65177.

It is an arithmetic number, because the mean of its divisors is an integer number (34854930).

Almost surely, 2^834215808 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 834215808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115357760).

834215808 is an abundant number, since it is smaller than the sum of its proper divisors (1396499712).

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

834215808 is a wasteful number, since it uses less digits than its factorization.

834215808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14555 (or 14543 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 834215808 is about 28882.7943246494. The cubic root of 834215808 is about 941.3680878775.

The spelling of 834215808 in words is "eight hundred thirty-four million, two hundred fifteen thousand, eight hundred eight".