82018700 has 18 divisors (see below), whose sum is σ = 177980796. Its totient is φ = 32807440.

The previous prime is 82018663. The next prime is 82018711. The reversal of 82018700 is 781028.

It is a self number, because there is not a number n which added to its sum of digits gives 82018700.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 409994 + ... + 410193.

It is an arithmetic number, because the mean of its divisors is an integer number (9887822).

Almost surely, 2^82018700 is an apocalyptic number.

It is an amenable number.

82018700 is an abundant number, since it is smaller than the sum of its proper divisors (95962096).

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

82018700 is a wasteful number, since it uses less digits than its factorization.

82018700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820201 (or 820194 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 82018700 is about 9056.4176140459. The cubic root of 82018700 is about 434.4811711902.

Adding to 82018700 its reverse (781028), we get a palindrome (82799728).

The spelling of 82018700 in words is "eighty-two million, eighteen thousand, seven hundred".