20343412 has 6 divisors (see below), whose sum is σ = 35600978. Its totient is φ = 10171704.

The previous prime is 20343403. The next prime is 20343419. The reversal of 20343412 is 21434302.

It can be written as a sum of positive squares in only one way, i.e., 15163236 + 5180176 = 3894^2 + 2276^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20343412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2542923 + ... + 2542930.

Almost surely, 2^20343412 is an apocalyptic number.

It is an amenable number.

20343412 is a deficient number, since it is larger than the sum of its proper divisors (15257566).

20343412 is a wasteful number, since it uses less digits than its factorization.

20343412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085857 (or 5085855 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20343412 is about 4510.3671690895. The cubic root of 20343412 is about 272.9865593798.

Adding to 20343412 its reverse (21434302), we get a palindrome (41777714).

The spelling of 20343412 in words is "twenty million, three hundred forty-three thousand, four hundred twelve".