2056440 has 32 divisors (see below), whose sum is σ = 6169680. Its totient is φ = 548352.

The previous prime is 2056421. The next prime is 2056441. The reversal of 2056440 is 446502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8449 + ... + 8688.

2^2056440 is an apocalyptic number.

2056440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2056440 is an abundant number, since it is smaller than the sum of its proper divisors (4113240).

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

2056440 is a wasteful number, since it uses less digits than its factorization.

2056440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17151 (or 17147 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2056440 is about 1434.0292884038. The cubic root of 2056440 is about 127.1662938261.

The spelling of 2056440 in words is "two million, fifty-six thousand, four hundred forty".