338870640 has 40 divisors (see below), whose sum is σ = 1050499728. Its totient is φ = 90365440.

The previous prime is 338870629. The next prime is 338870723. The reversal of 338870640 is 46078833.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×338870640² = 229666621308019200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 705741 + ... + 706220.

Almost surely, 2^338870640 is an apocalyptic number.

338870640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

338870640 is an abundant number, since it is smaller than the sum of its proper divisors (711629088).

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

338870640 is a wasteful number, since it uses less digits than its factorization.

338870640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411977 (or 1411971 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 338870640 is about 18408.4393689416. The cubic root of 338870640 is about 697.1795627325.

The spelling of 338870640 in words is "three hundred thirty-eight million, eight hundred seventy thousand, six hundred forty".