817253834 has 16 divisors (see below), whose sum is σ = 1244230080. Its totient is φ = 402524640.

The previous prime is 817253831. The next prime is 817253839. The reversal of 817253834 is 438352718.

817253834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 817253791 and 817253800.

It is not an unprimeable number, because it can be changed into a prime (817253831) 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, 131129 + ... + 137219.

It is an arithmetic number, because the mean of its divisors is an integer number (77764380).

Almost surely, 2^817253834 is an apocalyptic number.

817253834 is a deficient number, since it is larger than the sum of its proper divisors (426976246).

817253834 is a wasteful number, since it uses less digits than its factorization.

817253834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085.

The product of its digits is 161280, while the sum is 41.

The square root of 817253834 is about 28587.6517748485. The cubic root of 817253834 is about 934.9441220288.

The spelling of 817253834 in words is "eight hundred seventeen million, two hundred fifty-three thousand, eight hundred thirty-four".