20168943 has 8 divisors (see below), whose sum is σ = 27293568. Its totient is φ = 13245144.

The previous prime is 20168933. The next prime is 20168947. The reversal of 20168943 is 34986102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20168943 - 2⁴ = 20168927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168947) 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, 49971 + ... + 50372.

It is an arithmetic number, because the mean of its divisors is an integer number (3411696).

Almost surely, 2^20168943 is an apocalyptic number.

20168943 is a deficient number, since it is larger than the sum of its proper divisors (7124625).

20168943 is a wasteful number, since it uses less digits than its factorization.

20168943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100413.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20168943 is about 4490.9846359123. The cubic root of 20168943 is about 272.2039227337.

The spelling of 20168943 in words is "twenty million, one hundred sixty-eight thousand, nine hundred forty-three".