817273798 has 16 divisors (see below), whose sum is σ = 1345093776. Its totient is φ = 369339040.

The previous prime is 817273777. The next prime is 817273799. The reversal of 817273798 is 897372718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817273799) 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, 103561 + ... + 111172.

It is an arithmetic number, because the mean of its divisors is an integer number (84068361).

Almost surely, 2^817273798 is an apocalyptic number.

817273798 is a deficient number, since it is larger than the sum of its proper divisors (527819978).

817273798 is a wasteful number, since it uses less digits than its factorization.

817273798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214919.

The product of its digits is 1185408, while the sum is 52.

The square root of 817273798 is about 28588.0009444522. Note that the first 3 decimals coincide. The cubic root of 817273798 is about 934.9517349522.

The spelling of 817273798 in words is "eight hundred seventeen million, two hundred seventy-three thousand, seven hundred ninety-eight".