82818445 has 8 divisors (see below), whose sum is σ = 99795960. Its totient is φ = 65978880.

The previous prime is 82818431. The next prime is 82818451. The reversal of 82818445 is 54481828.

It can be written as a sum of positive squares in 4 ways, for example, as 20187049 + 62631396 = 4493^2 + 7914^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82818445 - 2⁷ = 82818317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82818398 and 82818407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33160 + ... + 35569.

It is an arithmetic number, because the mean of its divisors is an integer number (12474495).

Almost surely, 2^82818445 is an apocalyptic number.

It is an amenable number.

82818445 is a deficient number, since it is larger than the sum of its proper divisors (16977515).

82818445 is a wasteful number, since it uses less digits than its factorization.

82818445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68975.

The product of its digits is 81920, while the sum is 40.

The square root of 82818445 is about 9100.4639991596. The cubic root of 82818445 is about 435.8887804437. Note that the first 3 decimals are identical.

The spelling of 82818445 in words is "eighty-two million, eight hundred eighteen thousand, four hundred forty-five".