2639432 has 24 divisors (see below), whose sum is σ = 5107410. Its totient is φ = 1278720.

The previous prime is 2639431. The next prime is 2639447. The reversal of 2639432 is 2349362.

It can be written as a sum of positive squares in 3 ways, for example, as 2540836 + 98596 = 1594^2 + 314^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2639395 and 2639404.

It is not an unprimeable number, because it can be changed into a prime (2639431) 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 in 5 ways as a sum of consecutive naturals, for example, 10832 + ... + 11072.

2^2639432 is an apocalyptic number.

It is an amenable number.

2639432 is a deficient number, since it is larger than the sum of its proper divisors (2467978).

2639432 is a wasteful number, since it uses less digits than its factorization.

2639432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 280 counting only the distinct ones).

The product of its digits is 7776, while the sum is 29.

The square root of 2639432 is about 1624.6328816074. The cubic root of 2639432 is about 138.1985519691.

The spelling of 2639432 in words is "two million, six hundred thirty-nine thousand, four hundred thirty-two".