3878715 has 8 divisors (see below), whose sum is σ = 6205968. Its totient is φ = 2068640.

The previous prime is 3878713. The next prime is 3878741. The reversal of 3878715 is 5178783.

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

It is not a de Polignac number, because 3878715 - 2¹ = 3878713 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3878713) 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, 129276 + ... + 129305.

It is an arithmetic number, because the mean of its divisors is an integer number (775746).

Almost surely, 2^3878715 is an apocalyptic number.

3878715 is a deficient number, since it is larger than the sum of its proper divisors (2327253).

3878715 is a wasteful number, since it uses less digits than its factorization.

3878715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258589.

The product of its digits is 47040, while the sum is 39.

The square root of 3878715 is about 1969.4453533927. The cubic root of 3878715 is about 157.1192111213.

The spelling of 3878715 in words is "three million, eight hundred seventy-eight thousand, seven hundred fifteen".