3784816 has 40 divisors (see below), whose sum is σ = 8570880. Its totient is φ = 1585344.

The previous prime is 3784813. The next prime is 3784849. The reversal of 3784816 is 6184873.

It is a happy number.

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

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3784813) 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, 4905 + ... + 5623.

It is an arithmetic number, because the mean of its divisors is an integer number (214272).

Almost surely, 2^3784816 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 3784816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4285440).

3784816 is an abundant number, since it is smaller than the sum of its proper divisors (4786064).

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

3784816 is a wasteful number, since it uses less digits than its factorization.

3784816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 775 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 3784816 is about 1945.4603568307. The cubic root of 3784816 is about 155.8409512006.

The spelling of 3784816 in words is "three million, seven hundred eighty-four thousand, eight hundred sixteen".