3887778 has 8 divisors (see below), whose sum is σ = 7775568. Its totient is φ = 1295924.

The previous prime is 3887777. The next prime is 3887783. The reversal of 3887778 is 8777883.

3887778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

3887778 is an admirable number.

It is a super-2 number, since 2×3887778² = 30229635554568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3887771) 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 3 ways as a sum of consecutive naturals, for example, 323976 + ... + 323987.

It is an arithmetic number, because the mean of its divisors is an integer number (971946).

Almost surely, 2^3887778 is an apocalyptic number.

3887778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3887778 is a wasteful number, since it uses less digits than its factorization.

3887778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647968.

The product of its digits is 526848, while the sum is 48.

The square root of 3887778 is about 1971.7449125077. The cubic root of 3887778 is about 157.2414907736.

The spelling of 3887778 in words is "three million, eight hundred eighty-seven thousand, seven hundred seventy-eight".