2144784 has 20 divisors (see below), whose sum is σ = 5540816. Its totient is φ = 714912.

The previous prime is 2144783. The next prime is 2144789. The reversal of 2144784 is 4874412.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2144783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22294 + ... + 22389.

2^2144784 is an apocalyptic number.

2144784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2144784 is an abundant number, since it is smaller than the sum of its proper divisors (3396032).

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

2144784 is a wasteful number, since it uses less digits than its factorization.

2144784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44694 (or 44688 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 2144784 is about 1464.5081085470. The cubic root of 2144784 is about 128.9618299424.

The spelling of 2144784 in words is "two million, one hundred forty-four thousand, seven hundred eighty-four".