3778812 has 60 divisors (see below), whose sum is σ = 10062360. Its totient is φ = 1236384.

The previous prime is 3778793. The next prime is 3778823. The reversal of 3778812 is 2188773.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34614 + ... + 34722.

It is an arithmetic number, because the mean of its divisors is an integer number (167706).

Almost surely, 2^3778812 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 3778812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5031180).

3778812 is an abundant number, since it is smaller than the sum of its proper divisors (6283548).

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

3778812 is a wasteful number, since it uses less digits than its factorization.

3778812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 221 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 3778812 is about 1943.9166648805. The cubic root of 3778812 is about 155.7585020784.

The spelling of 3778812 in words is "three million, seven hundred seventy-eight thousand, eight hundred twelve".