3020556 has 72 divisors (see below), whose sum is σ = 8963136. Its totient is φ = 782880.

The previous prime is 3020551. The next prime is 3020557. The reversal of 3020556 is 6550203.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (3020551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6235 + ... + 6701.

It is an arithmetic number, because the mean of its divisors is an integer number (124488).

Almost surely, 2^3020556 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 3020556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4481568).

3020556 is an abundant number, since it is smaller than the sum of its proper divisors (5942580).

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

3020556 is a wasteful number, since it uses less digits than its factorization.

3020556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 3020556 is about 1737.9746833599. The cubic root of 3020556 is about 144.5536173116.

Adding to 3020556 its reverse (6550203), we get a palindrome (9570759).

The spelling of 3020556 in words is "three million, twenty thousand, five hundred fifty-six".