82078818 has 8 divisors (see below), whose sum is σ = 164157648. Its totient is φ = 27359604.

The previous prime is 82078817. The next prime is 82078831. The reversal of 82078818 is 81887028.

It is a happy number.

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

82078818 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 82078818.

It is not an unprimeable number, because it can be changed into a prime (82078811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6839896 + ... + 6839907.

It is an arithmetic number, because the mean of its divisors is an integer number (20519706).

Almost surely, 2^82078818 is an apocalyptic number.

82078818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82078818 is a wasteful number, since it uses less digits than its factorization.

82078818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13679808.

The product of its (nonzero) digits is 57344, while the sum is 42.

The square root of 82078818 is about 9059.7360888715. The cubic root of 82078818 is about 434.5873004827.

The spelling of 82078818 in words is "eighty-two million, seventy-eight thousand, eight hundred eighteen".