3215420 has 48 divisors (see below), whose sum is σ = 7408800. Its totient is φ = 1165056.

The previous prime is 3215417. The next prime is 3215447. The reversal of 3215420 is 245123.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21506 + ... + 21654.

It is an arithmetic number, because the mean of its divisors is an integer number (154350).

Almost surely, 2^3215420 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 3215420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3704400).

3215420 is an abundant number, since it is smaller than the sum of its proper divisors (4193380).

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

3215420 is a wasteful number, since it uses less digits than its factorization.

3215420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 3215420 is about 1793.1592232705. The cubic root of 3215420 is about 147.5975797862.

The spelling of 3215420 in words is "three million, two hundred fifteen thousand, four hundred twenty".