3870138 has 8 divisors (see below), whose sum is σ = 7740288. Its totient is φ = 1290044.

The previous prime is 3870077. The next prime is 3870149. The reversal of 3870138 is 8310783.

It is a sphenic number, since it is the product of 3 distinct primes.

3870138 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 322506 + ... + 322517.

It is an arithmetic number, because the mean of its divisors is an integer number (967536).

Almost surely, 2^3870138 is an apocalyptic number.

3870138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3870138 is a wasteful number, since it uses less digits than its factorization.

3870138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645028.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 3870138 is about 1967.2666316491. The cubic root of 3870138 is about 157.0033131139.

The spelling of 3870138 in words is "three million, eight hundred seventy thousand, one hundred thirty-eight".