2144380 has 72 divisors (see below), whose sum is σ = 5570208. Its totient is φ = 678912.

The previous prime is 2144371. The next prime is 2144383. The reversal of 2144380 is 834412.

2144380 = T₃₆₃ + T₃₆₄ + ... + T₃₉₂.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40434 + ... + 40486.

It is an arithmetic number, because the mean of its divisors is an integer number (77364).

2^2144380 is an apocalyptic number.

2144380 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 2144380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2785104).

2144380 is an abundant number, since it is smaller than the sum of its proper divisors (3425828).

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

2144380 is a wasteful number, since it uses less digits than its factorization.

2144380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2144380 is about 1464.3701717803. The cubic root of 2144380 is about 128.9537321804.

Adding to 2144380 its reverse (834412), we get a palindrome (2978792).

The spelling of 2144380 in words is "two million, one hundred forty-four thousand, three hundred eighty".