380936856 has 32 divisors (see below), whose sum is σ = 993749760. Its totient is φ = 121457952.

The previous prime is 380936819. The next prime is 380936869. The reversal of 380936856 is 658639083.

It is a super-2 number, since 2×380936856² = 290225776518329472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344500 + ... + 345603.

It is an arithmetic number, because the mean of its divisors is an integer number (31054680).

Almost surely, 2^380936856 is an apocalyptic number.

It is an amenable number.

380936856 is an abundant number, since it is smaller than the sum of its proper divisors (612812904).

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

380936856 is a wasteful number, since it uses less digits than its factorization.

380936856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690135 (or 690131 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 380936856 is about 19517.6037463619. The cubic root of 380936856 is about 724.9104009765.

The spelling of 380936856 in words is "three hundred eighty million, nine hundred thirty-six thousand, eight hundred fifty-six".