817796144 has 40 divisors (see below), whose sum is σ = 1730514240. Its totient is φ = 371297600.

The previous prime is 817796141. The next prime is 817796149. The reversal of 817796144 is 441697718.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (817796141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 189887 + ... + 194145.

It is an arithmetic number, because the mean of its divisors is an integer number (43262856).

Almost surely, 2^817796144 is an apocalyptic number.

It is an amenable number.

817796144 is an abundant number, since it is smaller than the sum of its proper divisors (912718096).

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

817796144 is a wasteful number, since it uses less digits than its factorization.

817796144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369 (or 5363 counting only the distinct ones).

The product of its digits is 338688, while the sum is 47.

The square root of 817796144 is about 28597.1352411391. The cubic root of 817796144 is about 935.1508784515.

The spelling of 817796144 in words is "eight hundred seventeen million, seven hundred ninety-six thousand, one hundred forty-four".