3878690 has 16 divisors (see below), whose sum is σ = 7006392. Its totient is φ = 1545984.

The previous prime is 3878687. The next prime is 3878701. The reversal of 3878690 is 968783.

It can be written as a sum of positive squares in 4 ways, for example, as 3829849 + 48841 = 1957^2 + 221^2 .

It is a super-2 number, since 2×3878690² = 30088472232200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3482 + ... + 4458.

Almost surely, 2^3878690 is an apocalyptic number.

3878690 is a deficient number, since it is larger than the sum of its proper divisors (3127702).

3878690 is a wasteful number, since it uses less digits than its factorization.

3878690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 3878690 is about 1969.4390064178. The cubic root of 3878690 is about 157.1188735534.

The spelling of 3878690 in words is "three million, eight hundred seventy-eight thousand, six hundred ninety".