3428028 has 24 divisors (see below), whose sum is σ = 8887760. Its totient is φ = 1142640.

The previous prime is 3428027. The next prime is 3428057. The reversal of 3428028 is 8208243.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 3427992 and 3428010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3428021) 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, 15763 + ... + 15978.

Almost surely, 2^3428028 is an apocalyptic number.

It is an amenable number.

3428028 is an abundant number, since it is smaller than the sum of its proper divisors (5459732).

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

3428028 is a wasteful number, since it uses less digits than its factorization.

3428028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31754 (or 31746 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 3428028 is about 1851.4934512442. The cubic root of 3428028 is about 150.7815210936.

The spelling of 3428028 in words is "three million, four hundred twenty-eight thousand, twenty-eight".