338978556 has 36 divisors (see below), whose sum is σ = 979272112. Its totient is φ = 96850944.

The previous prime is 338978551. The next prime is 338978567. The reversal of 338978556 is 655879833.

It is a happy number.

338978556 is a `hidden beast` number, since 3 + 3 + 89 + 7 + 8 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×338978556² = 229812922855690272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338978551) 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, 672325 + ... + 672828.

Almost surely, 2^338978556 is an apocalyptic number.

338978556 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

338978556 is an abundant number, since it is smaller than the sum of its proper divisors (640293556).

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

338978556 is a wasteful number, since it uses less digits than its factorization.

338978556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345170 (or 1345165 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 338978556 is about 18411.3702912086. The cubic root of 338978556 is about 697.2535623021.

The spelling of 338978556 in words is "three hundred thirty-eight million, nine hundred seventy-eight thousand, five hundred fifty-six".