82423505 has 8 divisors (see below), whose sum is σ = 100530024. Its totient is φ = 64857600.

The previous prime is 82423499. The next prime is 82423507. The reversal of 82423505 is 50532428.

It can be written as a sum of positive squares in 4 ways, for example, as 49729 + 82373776 = 223^2 + 9076^2 .

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

It is not a de Polignac number, because 82423505 - 2⁶ = 82423441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82423507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134816 + ... + 135425.

It is an arithmetic number, because the mean of its divisors is an integer number (12566253).

Almost surely, 2^82423505 is an apocalyptic number.

It is an amenable number.

82423505 is a deficient number, since it is larger than the sum of its proper divisors (18106519).

82423505 is a wasteful number, since it uses less digits than its factorization.

82423505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270307.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 82423505 is about 9078.7391745771. The cubic root of 82423505 is about 435.1947953918.

It can be divided in two parts, 82423 and 505, that added together give a palindrome (82928).

The spelling of 82423505 in words is "eighty-two million, four hundred twenty-three thousand, five hundred five".