82029785 has 8 divisors (see below), whose sum is σ = 98505096. Its totient is φ = 65577600.

The previous prime is 82029769. The next prime is 82029823. The reversal of 82029785 is 58792028.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20313049 + 61716736 = 4507^2 + 7856^2 .

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

It is not a de Polignac number, because 82029785 - 2⁴ = 82029769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3335 + ... + 13235.

It is an arithmetic number, because the mean of its divisors is an integer number (12313137).

Almost surely, 2^82029785 is an apocalyptic number.

It is an amenable number.

82029785 is a deficient number, since it is larger than the sum of its proper divisors (16475311).

82029785 is a wasteful number, since it uses less digits than its factorization.

82029785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11563.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 82029785 is about 9057.0295903238. The cubic root of 82029785 is about 434.5007439902.

The spelling of 82029785 in words is "eighty-two million, twenty-nine thousand, seven hundred eighty-five".