82103805 has 24 divisors (see below), whose sum is σ = 162644352. Its totient is φ = 37533024.

The previous prime is 82103803. The next prime is 82103821. The reversal of 82103805 is 50830128.

It is a happy number.

It is not a de Polignac number, because 82103805 - 2¹ = 82103803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82103803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130009 + ... + 130638.

It is an arithmetic number, because the mean of its divisors is an integer number (6776848).

Almost surely, 2^82103805 is an apocalyptic number.

It is an amenable number.

82103805 is a deficient number, since it is larger than the sum of its proper divisors (80540547).

82103805 is a wasteful number, since it uses less digits than its factorization.

82103805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260665 (or 260662 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 82103805 is about 9061.1149976148. The cubic root of 82103805 is about 434.6313960297.

The spelling of 82103805 in words is "eighty-two million, one hundred three thousand, eight hundred five".