82143826 has 4 divisors (see below), whose sum is σ = 123215742. Its totient is φ = 41071912.

The previous prime is 82143823. The next prime is 82143911. The reversal of 82143826 is 62834128.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80084601 + 2059225 = 8949^2 + 1435^2 .

It is a super-3 number, since 3×82143826³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82143791 and 82143800.

It is not an unprimeable number, because it can be changed into a prime (82143823) 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 as a sum of consecutive naturals, namely, 20535955 + ... + 20535958.

Almost surely, 2^82143826 is an apocalyptic number.

82143826 is a deficient number, since it is larger than the sum of its proper divisors (41071916).

82143826 is a wasteful number, since it uses less digits than its factorization.

82143826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41071915.

The product of its digits is 18432, while the sum is 34.

The square root of 82143826 is about 9063.3231212398. The cubic root of 82143826 is about 434.7020040347.

The spelling of 82143826 in words is "eighty-two million, one hundred forty-three thousand, eight hundred twenty-six".