338852781 has 16 divisors (see below), whose sum is σ = 502387200. Its totient is φ = 225729504.

The previous prime is 338852779. The next prime is 338852807. The reversal of 338852781 is 187258833.

It is not a de Polignac number, because 338852781 - 2¹ = 338852779 is a prime.

It is a super-2 number, since 2×338852781² = 229642414382867922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338852711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38305 + ... + 46313.

It is an arithmetic number, because the mean of its divisors is an integer number (31399200).

Almost surely, 2^338852781 is an apocalyptic number.

It is an amenable number.

338852781 is a deficient number, since it is larger than the sum of its proper divisors (163534419).

338852781 is a wasteful number, since it uses less digits than its factorization.

338852781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9585 (or 9579 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 338852781 is about 18407.9542861232. The cubic root of 338852781 is about 697.1673150416.

It can be divided in two parts, 3388 and 52781, that added together give a square (56169 = 237²).

The spelling of 338852781 in words is "three hundred thirty-eight million, eight hundred fifty-two thousand, seven hundred eighty-one".