3821870 has 16 divisors (see below), whose sum is σ = 7408800. Its totient is φ = 1411104.

The previous prime is 3821863. The next prime is 3821893. The reversal of 3821870 is 781283.

3821870 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, 14570 + ... + 14829.

It is an arithmetic number, because the mean of its divisors is an integer number (463050).

Almost surely, 2^3821870 is an apocalyptic number.

3821870 is a deficient number, since it is larger than the sum of its proper divisors (3586930).

3821870 is a wasteful number, since it uses less digits than its factorization.

3821870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29419.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 3821870 is about 1954.9603576543. The cubic root of 3821870 is about 156.3478704174.

The spelling of 3821870 in words is "three million, eight hundred twenty-one thousand, eight hundred seventy".