2768638 has 8 divisors (see below), whose sum is σ = 4174632. Its totient is φ = 1377096.

The previous prime is 2768627. The next prime is 2768639. The reversal of 2768638 is 8368672.

It is a happy number.

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

It is a d-powerful number, because it can be written as 2¹⁹ + 7 + 6 + 8³ + 6⁸ + 3¹² + 8⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 2768638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2768639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3120 + ... + 3907.

It is an arithmetic number, because the mean of its divisors is an integer number (521829).

2^2768638 is an apocalyptic number.

2768638 is a deficient number, since it is larger than the sum of its proper divisors (1405994).

2768638 is a wasteful number, since it uses less digits than its factorization.

2768638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7226.

The product of its digits is 96768, while the sum is 40.

The square root of 2768638 is about 1663.9224741556. The cubic root of 2768638 is about 140.4177657354.

The spelling of 2768638 in words is "two million, seven hundred sixty-eight thousand, six hundred thirty-eight".