2056540 has 36 divisors (see below), whose sum is σ = 4504248. Its totient is φ = 788640.

The previous prime is 2056517. The next prime is 2056547. The reversal of 2056540 is 456502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19167 + ... + 19273.

It is an arithmetic number, because the mean of its divisors is an integer number (125118).

2^2056540 is an apocalyptic number.

2056540 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 2056540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2252124).

2056540 is an abundant number, since it is smaller than the sum of its proper divisors (2447708).

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

2056540 is a wasteful number, since it uses less digits than its factorization.

2056540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2056540 is about 1434.0641547713. The cubic root of 2056540 is about 127.1683550620.

The spelling of 2056540 in words is "two million, fifty-six thousand, five hundred forty".