2640452 has 12 divisors (see below), whose sum is σ = 4673340. Its totient is φ = 1305216.

The previous prime is 2640409. The next prime is 2640497. The reversal of 2640452 is 2540462.

It can be written as a sum of positive squares in 2 ways, for example, as 1331716 + 1308736 = 1154^2 + 1144^2 .

It is an unprimeable number.

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, 3353 + ... + 4064.

It is an arithmetic number, because the mean of its divisors is an integer number (389445).

2^2640452 is an apocalyptic number.

It is an amenable number.

2640452 is a deficient number, since it is larger than the sum of its proper divisors (2032888).

2640452 is a wasteful number, since it uses less digits than its factorization.

2640452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510 (or 7508 counting only the distinct ones).

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

The square root of 2640452 is about 1624.9467683589. The cubic root of 2640452 is about 138.2163518049.

The spelling of 2640452 in words is "two million, six hundred forty thousand, four hundred fifty-two".