2056620 has 48 divisors (see below), whose sum is σ = 5822208. Its totient is φ = 542400.

The previous prime is 2056603. The next prime is 2056627. The reversal of 2056620 is 266502.

It is an Ulam number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2056627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8947 + ... + 9173.

It is an arithmetic number, because the mean of its divisors is an integer number (121296).

2^2056620 is an apocalyptic number.

2056620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2056620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2911104).

2056620 is an abundant number, since it is smaller than the sum of its proper divisors (3765588).

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

2056620 is a wasteful number, since it uses less digits than its factorization.

2056620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2056620 is about 1434.0920472550. The cubic root of 2056620 is about 127.1700040025.

The spelling of 2056620 in words is "two million, fifty-six thousand, six hundred twenty".