338378890 has 16 divisors (see below), whose sum is σ = 615927240. Its totient is φ = 133830400.

The previous prime is 338378881. The next prime is 338378891. The reversal of 338378890 is 98873833.

It can be written as a sum of positive squares in 4 ways, for example, as 166952241 + 171426649 = 12921^2 + 13093^2 .

It is a super-2 number, since 2×338378890² = 229000546395264200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338378891) 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, 189211 + ... + 190990.

Almost surely, 2^338378890 is an apocalyptic number.

338378890 is a deficient number, since it is larger than the sum of its proper divisors (277548350).

338378890 is a wasteful number, since it uses less digits than its factorization.

338378890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380297.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 338378890 is about 18395.0778742576. The cubic root of 338378890 is about 696.8421635610.

The spelling of 338378890 in words is "three hundred thirty-eight million, three hundred seventy-eight thousand, eight hundred ninety".