3271428 has 60 divisors (see below), whose sum is σ = 8944320. Its totient is φ = 1040688.

The previous prime is 3271391. The next prime is 3271441. The reversal of 3271428 is 8241723.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7233 + ... + 7671.

It is an arithmetic number, because the mean of its divisors is an integer number (149072).

Almost surely, 2^3271428 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 3271428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4472160).

3271428 is an abundant number, since it is smaller than the sum of its proper divisors (5672892).

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

3271428 is a wasteful number, since it uses less digits than its factorization.

3271428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 467 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 3271428 is about 1808.7089318074. The cubic root of 3271428 is about 148.4496309126.

The spelling of 3271428 in words is "three million, two hundred seventy-one thousand, four hundred twenty-eight".