20089143 has 24 divisors (see below), whose sum is σ = 30595968. Its totient is φ = 12676752.

The previous prime is 20089123. The next prime is 20089151. The reversal of 20089143 is 34198002.

It is not a de Polignac number, because 20089143 - 2⁹ = 20088631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20089103) 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, 21696 + ... + 22602.

It is an arithmetic number, because the mean of its divisors is an integer number (1274832).

Almost surely, 2^20089143 is an apocalyptic number.

20089143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20089143 is a deficient number, since it is larger than the sum of its proper divisors (10506825).

20089143 is a wasteful number, since it uses less digits than its factorization.

20089143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20089143 is about 4482.0913645306. The cubic root of 20089143 is about 271.8444495200.

The spelling of 20089143 in words is "twenty million, eighty-nine thousand, one hundred forty-three".