2285440 has 32 divisors (see below), whose sum is σ = 5465160. Its totient is φ = 913920.

The previous prime is 2285401. The next prime is 2285443. The reversal of 2285440 is 445822.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2285443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146 + ... + 2425.

2^2285440 is an apocalyptic number.

2285440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2285440 is an abundant number, since it is smaller than the sum of its proper divisors (3179720).

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

2285440 is an equidigital number, since it uses as much as digits as its factorization.

2285440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590 (or 3578 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2285440 is about 1511.7671778419. The cubic root of 2285440 is about 131.7214819208.

The spelling of 2285440 in words is "two million, two hundred eighty-five thousand, four hundred forty".