338866728 has 32 divisors (see below), whose sum is σ = 884001600. Its totient is φ = 108044288.

The previous prime is 338866727. The next prime is 338866793. The reversal of 338866728 is 827668833.

It is a super-2 number, since 2×338866728² = 229661318690851968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338866727) by changing a digit.

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, 306393 + ... + 307496.

It is an arithmetic number, because the mean of its divisors is an integer number (27625050).

Almost surely, 2^338866728 is an apocalyptic number.

It is an amenable number.

338866728 is an abundant number, since it is smaller than the sum of its proper divisors (545134872).

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

338866728 is a wasteful number, since it uses less digits than its factorization.

338866728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613921 (or 613917 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 338866728 is about 18408.3331130225. Note that the first 3 decimals coincide. The cubic root of 338866728 is about 697.1768799222.

The spelling of 338866728 in words is "three hundred thirty-eight million, eight hundred sixty-six thousand, seven hundred twenty-eight".