2730638 has 16 divisors (see below), whose sum is σ = 4235760. Its totient is φ = 1319616.

The previous prime is 2730601. The next prime is 2730643. The reversal of 2730638 is 8360372.

2730638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2730638.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 8456 + ... + 8772.

It is an arithmetic number, because the mean of its divisors is an integer number (264735).

2^2730638 is an apocalyptic number.

2730638 is a deficient number, since it is larger than the sum of its proper divisors (1505122).

2730638 is a wasteful number, since it uses less digits than its factorization.

2730638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 2730638 is about 1652.4642204901. The cubic root of 2730638 is about 139.7723852420.

The spelling of 2730638 in words is "two million, seven hundred thirty thousand, six hundred thirty-eight".