2144736 has 72 divisors (see below), whose sum is σ = 6663384. Its totient is φ = 648960.

The previous prime is 2144731. The next prime is 2144743. The reversal of 2144736 is 6374412.

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2830 + ... + 3506.

It is an arithmetic number, because the mean of its divisors is an integer number (92547).

2^2144736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2144736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3331692).

2144736 is an abundant number, since it is smaller than the sum of its proper divisors (4518648).

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

2144736 is a wasteful number, since it uses less digits than its factorization.

2144736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 693 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 2144736 is about 1464.4917207004. The cubic root of 2144736 is about 128.9608678853.

It can be divided in two parts, 214 and 4736, that added together give a triangular number (4950 = T₉₉).

The spelling of 2144736 in words is "two million, one hundred forty-four thousand, seven hundred thirty-six".