2748638 has 8 divisors (see below), whose sum is σ = 4302288. Its totient is φ = 1314544.

The previous prime is 2748617. The next prime is 2748643. The reversal of 2748638 is 8368472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29831 + ... + 29922.

It is an arithmetic number, because the mean of its divisors is an integer number (537786).

2^2748638 is an apocalyptic number.

2748638 is a deficient number, since it is larger than the sum of its proper divisors (1553650).

2748638 is a wasteful number, since it uses less digits than its factorization.

2748638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59778.

The product of its digits is 64512, while the sum is 38.

The square root of 2748638 is about 1657.9016858668. The cubic root of 2748638 is about 140.0788331522.

The spelling of 2748638 in words is "two million, seven hundred forty-eight thousand, six hundred thirty-eight".