84782018 has 8 divisors (see below), whose sum is σ = 127220112. Its totient is φ = 42375316.

The previous prime is 84782017. The next prime is 84782063. The reversal of 84782018 is 81028748.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (84782017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821 + ... + 13047.

It is an arithmetic number, because the mean of its divisors is an integer number (15902514).

Almost surely, 2^84782018 is an apocalyptic number.

84782018 is a deficient number, since it is larger than the sum of its proper divisors (42438094).

84782018 is a wasteful number, since it uses less digits than its factorization.

84782018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15696.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 84782018 is about 9207.7151346032. The cubic root of 84782018 is about 439.3067906705.

The spelling of 84782018 in words is "eighty-four million, seven hundred eighty-two thousand, eighteen".