85131826 has 16 divisors (see below), whose sum is σ = 140876568. Its totient is φ = 38332800.

The previous prime is 85131817. The next prime is 85131829. The reversal of 85131826 is 62813158.

It can be written as a sum of positive squares in 4 ways, for example, as 59274601 + 25857225 = 7699^2 + 5085^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85131791 and 85131800.

It is not an unprimeable number, because it can be changed into a prime (85131829) 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, 38865 + ... + 40996.

Almost surely, 2^85131826 is an apocalyptic number.

85131826 is a deficient number, since it is larger than the sum of its proper divisors (55744742).

85131826 is a wasteful number, since it uses less digits than its factorization.

85131826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79917.

The product of its digits is 11520, while the sum is 34.

The square root of 85131826 is about 9226.6909561337. The cubic root of 85131826 is about 439.9101503864.

The spelling of 85131826 in words is "eighty-five million, one hundred thirty-one thousand, eight hundred twenty-six".