2389636 has 6 divisors (see below), whose sum is σ = 4181870. Its totient is φ = 1194816.

The previous prime is 2389633. The next prime is 2389637. The reversal of 2389636 is 6369832.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1223236 + 1166400 = 1106^2 + 1080^2 .

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 = 2389595 and 2389604.

It is not an unprimeable number, because it can be changed into a prime (2389633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 298701 + ... + 298708.

2^2389636 is an apocalyptic number.

It is an amenable number.

2389636 is a deficient number, since it is larger than the sum of its proper divisors (1792234).

2389636 is a wasteful number, since it uses less digits than its factorization.

2389636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597413 (or 597411 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 2389636 is about 1545.8447528779. The cubic root of 2389636 is about 133.6935896277.

It can be divided in two parts, 23896 and 36, that added together give a palindrome (23932).

The spelling of 2389636 in words is "two million, three hundred eighty-nine thousand, six hundred thirty-six".