82018784 has 12 divisors (see below), whose sum is σ = 161474544. Its totient is φ = 41009376.

The previous prime is 82018771. The next prime is 82018789. The reversal of 82018784 is 48781028.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82018789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281512 + ... + 1281575.

It is an arithmetic number, because the mean of its divisors is an integer number (13456212).

Almost surely, 2^82018784 is an apocalyptic number.

It is an amenable number.

82018784 is a deficient number, since it is larger than the sum of its proper divisors (79455760).

82018784 is a wasteful number, since it uses less digits than its factorization.

82018784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563097 (or 2563089 counting only the distinct ones).

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

The square root of 82018784 is about 9056.4222516400. The cubic root of 82018784 is about 434.4813195158.

The spelling of 82018784 in words is "eighty-two million, eighteen thousand, seven hundred eighty-four".