338288561 has 8 divisors (see below), whose sum is σ = 369749184. Its totient is φ = 307604880.

The previous prime is 338288549. The next prime is 338288579. The reversal of 338288561 is 165882833.

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 338288561 - 2¹⁴ = 338272177 is a prime.

It is a super-2 number, since 2×338288561² = 228878301006901442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (338288591) 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, 193325 + ... + 195066.

It is an arithmetic number, because the mean of its divisors is an integer number (46218648).

Almost surely, 2^338288561 is an apocalyptic number.

It is an amenable number.

338288561 is a deficient number, since it is larger than the sum of its proper divisors (31460623).

338288561 is a wasteful number, since it uses less digits than its factorization.

338288561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388471.

The product of its digits is 276480, while the sum is 44.

The square root of 338288561 is about 18392.6224611935. The cubic root of 338288561 is about 696.7801515586.

The spelling of 338288561 in words is "three hundred thirty-eight million, two hundred eighty-eight thousand, five hundred sixty-one".