2144780 has 24 divisors (see below), whose sum is σ = 4914000. Its totient is φ = 779840.

The previous prime is 2144759. The next prime is 2144783. The reversal of 2144780 is 874412.

It is not an unprimeable number, because it can be changed into a prime (2144783) 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, 4655 + ... + 5094.

It is an arithmetic number, because the mean of its divisors is an integer number (204750).

2^2144780 is an apocalyptic number.

2144780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144780 is an abundant number, since it is smaller than the sum of its proper divisors (2769220).

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

2144780 is a wasteful number, since it uses less digits than its factorization.

2144780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769 (or 9767 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 2144780 is about 1464.5067429001. The cubic root of 2144780 is about 128.9617497715.

It can be divided in two parts, 214 and 4780, that added together give a palindrome (4994).

The spelling of 2144780 in words is "two million, one hundred forty-four thousand, seven hundred eighty".