2639456 has 12 divisors (see below), whose sum is σ = 5196492. Its totient is φ = 1319712.

The previous prime is 2639447. The next prime is 2639477. The reversal of 2639456 is 6549362.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 41210 + ... + 41273.

It is an arithmetic number, because the mean of its divisors is an integer number (433041).

2^2639456 is an apocalyptic number.

It is an amenable number.

2639456 is a deficient number, since it is larger than the sum of its proper divisors (2557036).

2639456 is an equidigital number, since it uses as much as digits as its factorization.

2639456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82493 (or 82485 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 2639456 is about 1624.6402678747. The cubic root of 2639456 is about 138.1989708414.

The spelling of 2639456 in words is "two million, six hundred thirty-nine thousand, four hundred fifty-six".