338220145 has 8 divisors (see below), whose sum is σ = 416833704. Its totient is φ = 263263104.

The previous prime is 338220143. The next prime is 338220149. The reversal of 338220145 is 541022833.

It can be written as a sum of positive squares in 4 ways, for example, as 55845729 + 282374416 = 7473^2 + 16804^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 338220145 - 2¹ = 338220143 is a prime.

It is a super-2 number, since 2×338220145² = 228785732967642050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338220143) 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, 913924 + ... + 914293.

It is an arithmetic number, because the mean of its divisors is an integer number (52104213).

Almost surely, 2^338220145 is an apocalyptic number.

It is an amenable number.

338220145 is a deficient number, since it is larger than the sum of its proper divisors (78613559).

338220145 is a wasteful number, since it uses less digits than its factorization.

338220145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828259.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 338220145 is about 18390.7624909899. The cubic root of 338220145 is about 696.7331757610.

Adding to 338220145 its reverse (541022833), we get a palindrome (879242978).

The spelling of 338220145 in words is "three hundred thirty-eight million, two hundred twenty thousand, one hundred forty-five".