82105518 has 24 divisors (see below), whose sum is σ = 180498024. Its totient is φ = 24880240.

The previous prime is 82105501. The next prime is 82105519. The reversal of 82105518 is 81550128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82105519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55821 + ... + 57272.

It is an arithmetic number, because the mean of its divisors is an integer number (7520751).

Almost surely, 2^82105518 is an apocalyptic number.

82105518 is an abundant number, since it is smaller than the sum of its proper divisors (98392506).

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

82105518 is a wasteful number, since it uses less digits than its factorization.

82105518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113120 (or 113109 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 82105518 is about 9061.2095219126. The cubic root of 82105518 is about 434.6344187009.

The spelling of 82105518 in words is "eighty-two million, one hundred five thousand, five hundred eighteen".