82040782 has 4 divisors (see below), whose sum is σ = 123061176. Its totient is φ = 41020390.

The previous prime is 82040773. The next prime is 82040801. The reversal of 82040782 is 28704028.

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

It is a super-2 number, since 2×82040782² = 13461379822343048, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 20510194 + ... + 20510197.

It is an arithmetic number, because the mean of its divisors is an integer number (30765294).

Almost surely, 2^82040782 is an apocalyptic number.

82040782 is a deficient number, since it is larger than the sum of its proper divisors (41020394).

82040782 is a wasteful number, since it uses less digits than its factorization.

82040782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41020393.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 82040782 is about 9057.6366674757. The cubic root of 82040782 is about 434.5201596661.

The spelling of 82040782 in words is "eighty-two million, forty thousand, seven hundred eighty-two".