3428628 has 72 divisors (see below), whose sum is σ = 9882432. Its totient is φ = 921984.

The previous prime is 3428617. The next prime is 3428651. The reversal of 3428628 is 8268243.

It is a nialpdrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201676 + ... + 201692.

It is an arithmetic number, because the mean of its divisors is an integer number (137256).

Almost surely, 2^3428628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3428628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4941216).

3428628 is an abundant number, since it is smaller than the sum of its proper divisors (6453804).

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

3428628 is an equidigital number, since it uses as much as digits as its factorization.

3428628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59 (or 29 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 3428628 is about 1851.6554755137. The cubic root of 3428628 is about 150.7903175635.

The spelling of 3428628 in words is "three million, four hundred twenty-eight thousand, six hundred twenty-eight".