3870978 has 16 divisors (see below), whose sum is σ = 8009280. Its totient is φ = 1245776.

The previous prime is 3870959. The next prime is 3870983. The reversal of 3870978 is 8790783.

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, 10950 + ... + 11297.

It is an arithmetic number, because the mean of its divisors is an integer number (500580).

Almost surely, 2^3870978 is an apocalyptic number.

3870978 is an abundant number, since it is smaller than the sum of its proper divisors (4138302).

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

3870978 is a wasteful number, since it uses less digits than its factorization.

3870978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22281.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 3870978 is about 1967.4801142578. The cubic root of 3870978 is about 157.0146712999.

The spelling of 3870978 in words is "three million, eight hundred seventy thousand, nine hundred seventy-eight".