3897428 has 12 divisors (see below), whose sum is σ = 6965952. Its totient is φ = 1907160.

The previous prime is 3897409. The next prime is 3897449. The reversal of 3897428 is 8247983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10178 + ... + 10553.

It is an arithmetic number, because the mean of its divisors is an integer number (580496).

Almost surely, 2^3897428 is an apocalyptic number.

It is an amenable number.

3897428 is a deficient number, since it is larger than the sum of its proper divisors (3068524).

3897428 is a wasteful number, since it uses less digits than its factorization.

3897428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20782 (or 20780 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 3897428 is about 1974.1904670016. The cubic root of 3897428 is about 157.3714816206.

The spelling of 3897428 in words is "three million, eight hundred ninety-seven thousand, four hundred twenty-eight".