338307778 has 8 divisors (see below), whose sum is σ = 510867900. Its totient is φ = 168018480.

The previous prime is 338307757. The next prime is 338307797. The reversal of 338307778 is 877703833.

It is a happy number.

338307778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 338302449 + 5329 = 18393^2 + 73^2 .

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

It is a super-2 number, since 2×338307778² = 228904305310594568, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 567333 + ... + 567928.

Almost surely, 2^338307778 is an apocalyptic number.

338307778 is a deficient number, since it is larger than the sum of its proper divisors (172560122).

338307778 is a wasteful number, since it uses less digits than its factorization.

338307778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135412.

The product of its (nonzero) digits is 592704, while the sum is 46.

The square root of 338307778 is about 18393.1448643238. The cubic root of 338307778 is about 696.7933451968.

The spelling of 338307778 in words is "three hundred thirty-eight million, three hundred seven thousand, seven hundred seventy-eight".