3813872 has 20 divisors (see below), whose sum is σ = 7421400. Its totient is φ = 1898688.

The previous prime is 3813871. The next prime is 3813893. The reversal of 3813872 is 2783183.

3813872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 3⁷ + 8³ + 1 + 3¹³ + 8⁷ + 7⁶ + 2¹¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3813871) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5243 + ... + 5925.

It is an arithmetic number, because the mean of its divisors is an integer number (371070).

Almost surely, 2^3813872 is an apocalyptic number.

It is an amenable number.

3813872 is a deficient number, since it is larger than the sum of its proper divisors (3607528).

3813872 is a wasteful number, since it uses less digits than its factorization.

3813872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1034 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 3813872 is about 1952.9137205724. The cubic root of 3813872 is about 156.2387315607.

The spelling of 3813872 in words is "three million, eight hundred thirteen thousand, eight hundred seventy-two".