82865738 has 4 divisors (see below), whose sum is σ = 124298610. Its totient is φ = 41432868.

The previous prime is 82865737. The next prime is 82865743. The reversal of 82865738 is 83756828.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 71690089 + 11175649 = 8467^2 + 3343^2 .

It is a junction number, because it is equal to n+sod(n) for n = 82865692 and 82865701.

It is not an unprimeable number, because it can be changed into a prime (82865737) 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 as a sum of consecutive naturals, namely, 20716433 + ... + 20716436.

Almost surely, 2^82865738 is an apocalyptic number.

82865738 is a deficient number, since it is larger than the sum of its proper divisors (41432872).

82865738 is a wasteful number, since it uses less digits than its factorization.

82865738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41432871.

The product of its digits is 645120, while the sum is 47.

The square root of 82865738 is about 9103.0620123121. The cubic root of 82865738 is about 435.9717352549.

It can be divided in two parts, 828 and 65738, that added together give a palindrome (66566).

The spelling of 82865738 in words is "eighty-two million, eight hundred sixty-five thousand, seven hundred thirty-eight".