338688387 has 12 divisors (see below), whose sum is σ = 489522904. Its totient is φ = 225650880.

The previous prime is 338688353. The next prime is 338688403. The reversal of 338688387 is 783886833.

It is a happy number.

It is not a de Polignac number, because 338688387 - 2⁸ = 338688131 is a prime.

It is a super-2 number, since 2×338688387² = 229419646977323538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338688307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4587 + ... + 26427.

Almost surely, 2^338688387 is an apocalyptic number.

338688387 is a deficient number, since it is larger than the sum of its proper divisors (150834517).

338688387 is a wasteful number, since it uses less digits than its factorization.

338688387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23570 (or 23567 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 338688387 is about 18403.4884464875. The cubic root of 338688387 is about 697.0545535226.

The spelling of 338688387 in words is "three hundred thirty-eight million, six hundred eighty-eight thousand, three hundred eighty-seven".