2145344 has 14 divisors (see below), whose sum is σ = 4257294. Its totient is φ = 1072640.

The previous prime is 2145343. The next prime is 2145359. The reversal of 2145344 is 4435412.

It can be written as a sum of positive squares in only one way, i.e., 1638400 + 506944 = 1280^2 + 712^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145343) 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 as a sum of consecutive naturals, namely, 16697 + ... + 16824.

2^2145344 is an apocalyptic number.

It is an amenable number.

2145344 is a deficient number, since it is larger than the sum of its proper divisors (2111950).

2145344 is an equidigital number, since it uses as much as digits as its factorization.

2145344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33533 (or 33523 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 2145344 is about 1464.6992865431. The cubic root of 2145344 is about 128.9730528814.

The spelling of 2145344 in words is "two million, one hundred forty-five thousand, three hundred forty-four".