338880281 has 4 divisors (see below), whose sum is σ = 339088932. Its totient is φ = 338671632.

The previous prime is 338880271. The next prime is 338880287. The reversal of 338880281 is 182088833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 182088833 = 4019 ⋅45307.

It can be written as a sum of positive squares in 2 ways, for example, as 67158025 + 271722256 = 8195^2 + 16484^2 .

It is a cyclic number.

It is not a de Polignac number, because 338880281 - 2¹⁰ = 338879257 is a prime.

It is a super-2 number, since 2×338880281² = 229679689701277922, 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 (338880287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101870 + ... + 105143.

It is an arithmetic number, because the mean of its divisors is an integer number (84772233).

Almost surely, 2^338880281 is an apocalyptic number.

It is an amenable number.

338880281 is a deficient number, since it is larger than the sum of its proper divisors (208651).

338880281 is a wasteful number, since it uses less digits than its factorization.

338880281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208650.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 338880281 is about 18408.7012306681. The cubic root of 338880281 is about 697.1861743454.

The spelling of 338880281 in words is "three hundred thirty-eight million, eight hundred eighty thousand, two hundred eighty-one".