3890478 has 16 divisors (see below), whose sum is σ = 8190720. Its totient is φ = 1228536.

The previous prime is 3890431. The next prime is 3890503. The reversal of 3890478 is 8740983.

It is a congruent number.

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, 16950 + ... + 17177.

It is an arithmetic number, because the mean of its divisors is an integer number (511920).

Almost surely, 2^3890478 is an apocalyptic number.

3890478 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3890478 is an abundant number, since it is smaller than the sum of its proper divisors (4300242).

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

3890478 is a wasteful number, since it uses less digits than its factorization.

3890478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34151.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 3890478 is about 1972.4294664195. The cubic root of 3890478 is about 157.2778829220.

The spelling of 3890478 in words is "three million, eight hundred ninety thousand, four hundred seventy-eight".