3898128 has 40 divisors (see below), whose sum is σ = 10846528. Its totient is φ = 1199232.

The previous prime is 3898123. The next prime is 3898163. The reversal of 3898128 is 8218983.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (3898123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2500 + ... + 3747.

Almost surely, 2^3898128 is an apocalyptic number.

It is an amenable number.

3898128 is an abundant number, since it is smaller than the sum of its proper divisors (6948400).

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

3898128 is a wasteful number, since it uses less digits than its factorization.

3898128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6271 (or 6265 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 3898128 is about 1974.3677469003. The cubic root of 3898128 is about 157.3809026578.

The spelling of 3898128 in words is "three million, eight hundred ninety-eight thousand, one hundred twenty-eight".