82178494 has 8 divisors (see below), whose sum is σ = 128627280. Its totient is φ = 39302736.

The previous prime is 82178483. The next prime is 82178501. The reversal of 82178494 is 49487128.

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

It is a super-3 number, since 3×82178494³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 82178494.

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 3 ways as a sum of consecutive naturals, for example, 893199 + ... + 893290.

It is an arithmetic number, because the mean of its divisors is an integer number (16078410).

Almost surely, 2^82178494 is an apocalyptic number.

82178494 is a deficient number, since it is larger than the sum of its proper divisors (46448786).

82178494 is a wasteful number, since it uses less digits than its factorization.

82178494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786514.

The product of its digits is 129024, while the sum is 43.

The square root of 82178494 is about 9065.2354630203. The cubic root of 82178494 is about 434.7631493462.

The spelling of 82178494 in words is "eighty-two million, one hundred seventy-eight thousand, four hundred ninety-four".