2287780 has 24 divisors (see below), whose sum is σ = 5241600. Its totient is φ = 831840.

The previous prime is 2287777. The next prime is 2287807. The reversal of 2287780 is 877822.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4980 + ... + 5419.

It is an arithmetic number, because the mean of its divisors is an integer number (218400).

2^2287780 is an apocalyptic number.

2287780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2287780 is an abundant number, since it is smaller than the sum of its proper divisors (2953820).

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

2287780 is a wasteful number, since it uses less digits than its factorization.

2287780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10419 (or 10417 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 2287780 is about 1512.5409085377. The cubic root of 2287780 is about 131.7664219371.

It can be divided in two parts, 228 and 7780, that added together give a palindrome (8008).

The spelling of 2287780 in words is "two million, two hundred eighty-seven thousand, seven hundred eighty".