82981385 has 8 divisors (see below), whose sum is σ = 99684096. Its totient is φ = 66314160.

The previous prime is 82981351. The next prime is 82981387. The reversal of 82981385 is 58318928.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82981385 - 2¹⁰ = 82980361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82981387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3419 + ... + 13328.

It is an arithmetic number, because the mean of its divisors is an integer number (12460512).

Almost surely, 2^82981385 is an apocalyptic number.

It is an amenable number.

82981385 is a deficient number, since it is larger than the sum of its proper divisors (16702711).

82981385 is a wasteful number, since it uses less digits than its factorization.

82981385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17743.

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

The square root of 82981385 is about 9109.4118910059. The cubic root of 82981385 is about 436.1744542874.

The spelling of 82981385 in words is "eighty-two million, nine hundred eighty-one thousand, three hundred eighty-five".