380280856 has 8 divisors (see below), whose sum is σ = 713026620. Its totient is φ = 190140424.

The previous prime is 380280853. The next prime is 380280881. The reversal of 380280856 is 658082083.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×380280856² = 289227058880185472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380280853) 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 as a sum of consecutive naturals, namely, 23767546 + ... + 23767561.

Almost surely, 2^380280856 is an apocalyptic number.

It is an amenable number.

380280856 is a deficient number, since it is larger than the sum of its proper divisors (332745764).

380280856 is a wasteful number, since it uses less digits than its factorization.

380280856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47535113 (or 47535109 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 380280856 is about 19500.7911634374. The cubic root of 380280856 is about 724.4940463596.

The spelling of 380280856 in words is "three hundred eighty million, two hundred eighty thousand, eight hundred fifty-six".