20340444 has 24 divisors (see below), whose sum is σ = 47756800. Its totient is φ = 6737904.

The previous prime is 20340443. The next prime is 20340451. The reversal of 20340444 is 44404302.

It is a self number, because there is not a number n which added to its sum of digits gives 20340444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3244 + ... + 7155.

Almost surely, 2^20340444 is an apocalyptic number.

It is an amenable number.

20340444 is an abundant number, since it is smaller than the sum of its proper divisors (27416356).

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

20340444 is a wasteful number, since it uses less digits than its factorization.

20340444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10569 (or 10567 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 20340444 is about 4510.0381373110. The cubic root of 20340444 is about 272.9732829521.

Adding to 20340444 its reverse (44404302), we get a palindrome (64744746).

The spelling of 20340444 in words is "twenty million, three hundred forty thousand, four hundred forty-four".