2143432020 has 24 divisors (see below), whose sum is σ = 6001609824. Its totient is φ = 571581856.

The previous prime is 2143432013. The next prime is 2143432037. The reversal of 2143432020 is 202343412.

It is a super-2 number, since 2×2143432020² = 9188601648722560800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17861874 + ... + 17861993.

It is an arithmetic number, because the mean of its divisors is an integer number (250067076).

Almost surely, 2^2143432020 is an apocalyptic number.

2143432020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143432020 is an abundant number, since it is smaller than the sum of its proper divisors (3858177804).

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

2143432020 is a wasteful number, since it uses less digits than its factorization.

2143432020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35723879 (or 35723877 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2143432020 is about 46297.2139550535. The cubic root of 2143432020 is about 1289.3472690814.

Adding to 2143432020 its reverse (202343412), we get a palindrome (2345775432).

The spelling of 2143432020 in words is "two billion, one hundred forty-three million, four hundred thirty-two thousand, twenty".