2285780 has 48 divisors (see below), whose sum is σ = 5685120. Its totient is φ = 755328.

The previous prime is 2285779. The next prime is 2285797. The reversal of 2285780 is 875822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3779 + ... + 4341.

It is an arithmetic number, because the mean of its divisors is an integer number (118440).

2^2285780 is an apocalyptic number.

2285780 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 2285780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2842560).

2285780 is an abundant number, since it is smaller than the sum of its proper divisors (3399340).

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

2285780 is a wasteful number, since it uses less digits than its factorization.

2285780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2285780 is about 1511.8796248379. The cubic root of 2285780 is about 131.7280135709.

The spelling of 2285780 in words is "two million, two hundred eighty-five thousand, seven hundred eighty".