3889278 has 12 divisors (see below), whose sum is σ = 8426808. Its totient is φ = 1296420.

The previous prime is 3889261. The next prime is 3889279. The reversal of 3889278 is 8729883.

It is a super-2 number, since 2×3889278² = 30252966722568, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108018 + ... + 108053.

It is an arithmetic number, because the mean of its divisors is an integer number (702234).

Almost surely, 2^3889278 is an apocalyptic number.

3889278 is an abundant number, since it is smaller than the sum of its proper divisors (4537530).

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

3889278 is a wasteful number, since it uses less digits than its factorization.

3889278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216079 (or 216076 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 3889278 is about 1972.1252495721. The cubic root of 3889278 is about 157.2617107132.

The spelling of 3889278 in words is "three million, eight hundred eighty-nine thousand, two hundred seventy-eight".