3878812 has 48 divisors (see below), whose sum is σ = 8547840. Its totient is φ = 1501632.

The previous prime is 3878783. The next prime is 3878843. The reversal of 3878812 is 2188783.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12078 + ... + 12394.

It is an arithmetic number, because the mean of its divisors is an integer number (178080).

Almost surely, 2^3878812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3878812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4273920).

3878812 is an abundant number, since it is smaller than the sum of its proper divisors (4669028).

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

3878812 is a wasteful number, since it uses less digits than its factorization.

3878812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 368 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 3878812 is about 1969.4699794615. The cubic root of 3878812 is about 157.1205208709.

The spelling of 3878812 in words is "three million, eight hundred seventy-eight thousand, eight hundred twelve".