82102881 has 32 divisors (see below), whose sum is σ = 129529600. Its totient is φ = 46230912.

The previous prime is 82102879. The next prime is 82102903. The reversal of 82102881 is 18820128.

It is not a de Polignac number, because 82102881 - 2¹ = 82102879 is a prime.

It is a super-2 number, since 2×82102881² = 13481766137000322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82102841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74571 + ... + 75663.

It is an arithmetic number, because the mean of its divisors is an integer number (4047800).

Almost surely, 2^82102881 is an apocalyptic number.

It is an amenable number.

82102881 is a deficient number, since it is larger than the sum of its proper divisors (47426719).

82102881 is a wasteful number, since it uses less digits than its factorization.

82102881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 82102881 is about 9061.0640103688. The cubic root of 82102881 is about 434.6297655697.

The spelling of 82102881 in words is "eighty-two million, one hundred two thousand, eight hundred eighty-one".