20006343 has 24 divisors (see below), whose sum is σ = 34464768. Its totient is φ = 10934352.

The previous prime is 20006339. The next prime is 20006351. The reversal of 20006343 is 34360002.

It is not a de Polignac number, because 20006343 - 2² = 20006339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20006243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5455 + ... + 8352.

It is an arithmetic number, because the mean of its divisors is an integer number (1436032).

Almost surely, 2^20006343 is an apocalyptic number.

20006343 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20006343 is a deficient number, since it is larger than the sum of its proper divisors (14458425).

20006343 is a wasteful number, since it uses less digits than its factorization.

20006343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13843 (or 13840 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20006343 is about 4472.8450677393. The cubic root of 20006343 is about 271.4704545446.

Adding to 20006343 its reverse (34360002), we get a palindrome (54366345).

The spelling of 20006343 in words is "twenty million, six thousand, three hundred forty-three".