3840078 has 32 divisors (see below), whose sum is σ = 8491392. Its totient is φ = 1148000.

The previous prime is 3840077. The next prime is 3840091. The reversal of 3840078 is 8700483.

3840078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840077) 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 15 ways as a sum of consecutive naturals, for example, 5128 + ... + 5828.

It is an arithmetic number, because the mean of its divisors is an integer number (265356).

Almost surely, 2^3840078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3840078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4245696).

3840078 is an abundant number, since it is smaller than the sum of its proper divisors (4651314).

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

3840078 is a wasteful number, since it uses less digits than its factorization.

3840078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 3840078 is about 1959.6116962296. The cubic root of 3840078 is about 156.5957659162.

The spelling of 3840078 in words is "three million, eight hundred forty thousand, seventy-eight".