338128775 has 12 divisors (see below), whose sum is σ = 420248400. Its totient is φ = 269878080.

The previous prime is 338128757. The next prime is 338128783. The reversal of 338128775 is 577821833.

It is not a de Polignac number, because 338128775 - 2⁸ = 338128519 is a prime.

It is a super-2 number, since 2×338128775² = 228662136966001250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4430 + ... + 26379.

It is an arithmetic number, because the mean of its divisors is an integer number (35020700).

Almost surely, 2^338128775 is an apocalyptic number.

338128775 is a deficient number, since it is larger than the sum of its proper divisors (82119625).

338128775 is a wasteful number, since it uses less digits than its factorization.

338128775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31258 (or 31253 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The square root of 338128775 is about 18388.2781956332. The cubic root of 338128775 is about 696.6704294062.

The spelling of 338128775 in words is "three hundred thirty-eight million, one hundred twenty-eight thousand, seven hundred seventy-five".