82013340 has 24 divisors (see below), whose sum is σ = 229637520. Its totient is φ = 21870208.

The previous prime is 82013339. The next prime is 82013359. The reversal of 82013340 is 4331028.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683385 + ... + 683504.

It is an arithmetic number, because the mean of its divisors is an integer number (9568230).

Almost surely, 2^82013340 is an apocalyptic number.

It is an amenable number.

82013340 is an abundant number, since it is smaller than the sum of its proper divisors (147624180).

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

82013340 is a wasteful number, since it uses less digits than its factorization.

82013340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366901 (or 1366899 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 82013340 is about 9056.1216864616. The cubic root of 82013340 is about 434.4717063982.

Adding to 82013340 its reverse (4331028), we get a palindrome (86344368).

The spelling of 82013340 in words is "eighty-two million, thirteen thousand, three hundred forty".