2055840 has 48 divisors (see below), whose sum is σ = 6477408. Its totient is φ = 548096.

The previous prime is 2055829. The next prime is 2055847. The reversal of 2055840 is 485502.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2055840.

It is not an unprimeable number, because it can be changed into a prime (2055847) 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, 1662 + ... + 2621.

It is an arithmetic number, because the mean of its divisors is an integer number (134946).

2^2055840 is an apocalyptic number.

2055840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2055840 is an abundant number, since it is smaller than the sum of its proper divisors (4421568).

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

2055840 is a wasteful number, since it uses less digits than its factorization.

2055840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4301 (or 4293 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2055840 is about 1433.8200723940. The cubic root of 2055840 is about 127.1539250079.

The spelling of 2055840 in words is "two million, fifty-five thousand, eight hundred forty".