378865856 has 14 divisors (see below), whose sum is σ = 751812060. Its totient is φ = 189432896.

The previous prime is 378865843. The next prime is 378865891. The reversal of 378865856 is 658568873.

It is a super-2 number, since 2×378865856² = 287078673685225472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2959826 + ... + 2959953.

Almost surely, 2^378865856 is an apocalyptic number.

It is an amenable number.

378865856 is a deficient number, since it is larger than the sum of its proper divisors (372946204).

378865856 is an equidigital number, since it uses as much as digits as its factorization.

378865856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919791 (or 5919781 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 56.

The square root of 378865856 is about 19464.4767718015. The cubic root of 378865856 is about 723.5943313105.

The spelling of 378865856 in words is "three hundred seventy-eight million, eight hundred sixty-five thousand, eight hundred fifty-six".