20143000 has 32 divisors (see below), whose sum is σ = 47136960. Its totient is φ = 8056800.

The previous prime is 20142959. The next prime is 20143007. The reversal of 20143000 is 34102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143007) 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 in 7 ways as a sum of consecutive naturals, for example, 9072 + ... + 11071.

It is an arithmetic number, because the mean of its divisors is an integer number (1473030).

Almost surely, 2^20143000 is an apocalyptic number.

20143000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20143000 is an abundant number, since it is smaller than the sum of its proper divisors (26993960).

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

20143000 is a wasteful number, since it uses less digits than its factorization.

20143000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20164 (or 20150 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20143000 is about 4488.0953644057. The cubic root of 20143000 is about 272.0871620891.

Adding to 20143000 its reverse (34102), we get a palindrome (20177102).

The spelling of 20143000 in words is "twenty million, one hundred forty-three thousand".