3878680 has 32 divisors (see below), whose sum is σ = 9399600. Its totient is φ = 1431936.

The previous prime is 3878657. The next prime is 3878681. The reversal of 3878680 is 868783.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3210 + ... + 4249.

Almost surely, 2^3878680 is an apocalyptic number.

It is an amenable number.

3878680 is an abundant number, since it is smaller than the sum of its proper divisors (5520920).

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

3878680 is a wasteful number, since it uses less digits than its factorization.

3878680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7483 (or 7479 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 3878680 is about 1969.4364676221. The cubic root of 3878680 is about 157.1187385259.

The spelling of 3878680 in words is "three million, eight hundred seventy-eight thousand, six hundred eighty".