338563640 has 32 divisors (see below), whose sum is σ = 770953680. Its totient is φ = 133792512.

The previous prime is 338563627. The next prime is 338563651. The reversal of 338563640 is 46365833.

It is a super-2 number, since 2×338563640² = 229250676660099200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 338563594 and 338563603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47669 + ... + 54308.

Almost surely, 2^338563640 is an apocalyptic number.

It is an amenable number.

338563640 is an abundant number, since it is smaller than the sum of its proper divisors (432390040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

338563640 is a wasteful number, since it uses less digits than its factorization.

338563640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102071 (or 102067 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 338563640 is about 18400.0989127776. The cubic root of 338563640 is about 696.9689624151.

The spelling of 338563640 in words is "three hundred thirty-eight million, five hundred sixty-three thousand, six hundred forty".