2989638 has 24 divisors (see below), whose sum is σ = 6637176. Its totient is φ = 972000.

The previous prime is 2989633. The next prime is 2989673. The reversal of 2989638 is 8369892.

2989638 is a `hidden beast` number, since 2 + 9 + 8 + 9 + 638 = 666.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2989593 and 2989602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2989633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1288 + ... + 2763.

It is an arithmetic number, because the mean of its divisors is an integer number (276549).

2^2989638 is an apocalyptic number.

2989638 is an abundant number, since it is smaller than the sum of its proper divisors (3647538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2989638 is a wasteful number, since it uses less digits than its factorization.

2989638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100 (or 4097 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 2989638 is about 1729.0569684079. The cubic root of 2989638 is about 144.0587144825.

The spelling of 2989638 in words is "two million, nine hundred eighty-nine thousand, six hundred thirty-eight".