82159388 has 36 divisors (see below), whose sum is σ = 151731720. Its totient is φ = 38886912.

The previous prime is 82159387. The next prime is 82159397. The reversal of 82159388 is 88395128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82159387) 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, 846956 + ... + 847052.

It is an arithmetic number, because the mean of its divisors is an integer number (4214770).

Almost surely, 2^82159388 is an apocalyptic number.

It is an amenable number.

82159388 is a deficient number, since it is larger than the sum of its proper divisors (69572332).

82159388 is a wasteful number, since it uses less digits than its factorization.

82159388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 195 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 82159388 is about 9064.1815957096. The cubic root of 82159388 is about 434.7294534721.

The spelling of 82159388 in words is "eighty-two million, one hundred fifty-nine thousand, three hundred eighty-eight".