82107420 has 48 divisors (see below), whose sum is σ = 235515168. Its totient is φ = 21360640.

The previous prime is 82107419. The next prime is 82107427. The reversal of 82107420 is 2470128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82107427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14229 + ... + 19148.

It is an arithmetic number, because the mean of its divisors is an integer number (4906566).

Almost surely, 2^82107420 is an apocalyptic number.

It is an amenable number.

82107420 is an abundant number, since it is smaller than the sum of its proper divisors (153407748).

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

82107420 is a wasteful number, since it uses less digits than its factorization.

82107420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33430 (or 33428 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 82107420 is about 9061.3144741809. The cubic root of 82107420 is about 434.6377748224.

Adding to 82107420 its reverse (2470128), we get a palindrome (84577548).

The spelling of 82107420 in words is "eighty-two million, one hundred seven thousand, four hundred twenty".