2039440 has 80 divisors (see below), whose sum is σ = 5343408. Its totient is φ = 718848.

The previous prime is 2039437. The next prime is 2039461. The reversal of 2039440 is 449302.

It can be written as a sum of positive squares in 8 ways, for example, as 11664 + 2027776 = 108^2 + 1424^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38454 + ... + 38506.

2^2039440 is an apocalyptic number.

2039440 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 2039440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2671704).

2039440 is an abundant number, since it is smaller than the sum of its proper divisors (3303968).

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

2039440 is a wasteful number, since it uses less digits than its factorization.

2039440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2039440 is about 1428.0896330413. The cubic root of 2039440 is about 126.8149080051.

The spelling of 2039440 in words is "two million, thirty-nine thousand, four hundred forty".