3878320 has 20 divisors (see below), whose sum is σ = 9017280. Its totient is φ = 1551296.

The previous prime is 3878297. The next prime is 3878323. The reversal of 3878320 is 238783.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (3878323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24160 + ... + 24319.

It is an arithmetic number, because the mean of its divisors is an integer number (450864).

Almost surely, 2^3878320 is an apocalyptic number.

It is an amenable number.

3878320 is an abundant number, since it is smaller than the sum of its proper divisors (5138960).

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

3878320 is a wasteful number, since it uses less digits than its factorization.

3878320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48492 (or 48486 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 3878320 is about 1969.3450687983. The cubic root of 3878320 is about 157.1138773793.

The spelling of 3878320 in words is "three million, eight hundred seventy-eight thousand, three hundred twenty".