82438306 has 8 divisors (see below), whose sum is σ = 124372764. Its totient is φ = 40980720.

The previous prime is 82438277. The next prime is 82438309. The reversal of 82438306 is 60383428.

It can be written as a sum of positive squares in 2 ways, for example, as 80838081 + 1600225 = 8991^2 + 1265^2 .

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

It is a super-2 number, since 2×82438306² = 13592148592299272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82438309) 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 in 3 ways as a sum of consecutive naturals, for example, 118785 + ... + 119476.

Almost surely, 2^82438306 is an apocalyptic number.

82438306 is a deficient number, since it is larger than the sum of its proper divisors (41934458).

82438306 is a wasteful number, since it uses less digits than its factorization.

82438306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238436.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 82438306 is about 9079.5542842146. The cubic root of 82438306 is about 435.2208435143.

The spelling of 82438306 in words is "eighty-two million, four hundred thirty-eight thousand, three hundred six".