338427785 has 4 divisors (see below), whose sum is σ = 406113348. Its totient is φ = 270742224.

The previous prime is 338427779. The next prime is 338427809. The reversal of 338427785 is 587724833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 587724833 = 17 ⋅34572049.

It can be written as a sum of positive squares in 2 ways, for example, as 235039561 + 103388224 = 15331^2 + 10168^2 .

It is a cyclic number.

It is not a de Polignac number, because 338427785 - 2¹² = 338423689 is a prime.

It is a super-2 number, since 2×338427785² = 229066731320012450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33842774 + ... + 33842783.

It is an arithmetic number, because the mean of its divisors is an integer number (101528337).

Almost surely, 2^338427785 is an apocalyptic number.

It is an amenable number.

338427785 is a deficient number, since it is larger than the sum of its proper divisors (67685563).

338427785 is an equidigital number, since it uses as much as digits as its factorization.

338427785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67685562.

The product of its digits is 1128960, while the sum is 47.

The square root of 338427785 is about 18396.4068502520. The cubic root of 338427785 is about 696.8757259941.

The spelling of 338427785 in words is "three hundred thirty-eight million, four hundred twenty-seven thousand, seven hundred eighty-five".