2789638 has 16 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 1339336.

The previous prime is 2789629. The next prime is 2789669. The reversal of 2789638 is 8369872.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2789594 and 2789603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5295 + ... + 5797.

It is an arithmetic number, because the mean of its divisors is an integer number (272160).

2^2789638 is an apocalyptic number.

2789638 is a deficient number, since it is larger than the sum of its proper divisors (1564922).

2789638 is a wasteful number, since it uses less digits than its factorization.

2789638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611.

The product of its digits is 145152, while the sum is 43.

The square root of 2789638 is about 1670.2209434683. The cubic root of 2789638 is about 140.7718927947.

The spelling of 2789638 in words is "two million, seven hundred eighty-nine thousand, six hundred thirty-eight".