3778872 has 32 divisors (see below), whose sum is σ = 9945600. Its totient is φ = 1193184.

The previous prime is 3778861. The next prime is 3778897. The reversal of 3778872 is 2788773.

3778872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3688 + ... + 4599.

It is an arithmetic number, because the mean of its divisors is an integer number (310800).

Almost surely, 2^3778872 is an apocalyptic number.

It is an amenable number.

3778872 is an abundant number, since it is smaller than the sum of its proper divisors (6166728).

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

3778872 is a wasteful number, since it uses less digits than its factorization.

3778872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8315 (or 8311 counting only the distinct ones).

The product of its digits is 131712, while the sum is 42.

The square root of 3778872 is about 1943.9320975795. The cubic root of 3778872 is about 155.7593264522.

Subtracting from 3778872 its reverse (2788773), we obtain a palindrome (990099).

The spelling of 3778872 in words is "three million, seven hundred seventy-eight thousand, eight hundred seventy-two".