1143432020 has 24 divisors (see below), whose sum is σ = 2403963744. Its totient is φ = 456847776.

The previous prime is 1143431953. The next prime is 1143432047. The reversal of 1143432020 is 202343411.

It is a super-2 number, since 2×1143432020² = 2614873568722560800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1143431983 and 1143432001.

It is a congruent number.

It is an unprimeable number.

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, 14714 + ... + 50033.

It is an arithmetic number, because the mean of its divisors is an integer number (100165156).

Almost surely, 2^1143432020 is an apocalyptic number.

1143432020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143432020 is an abundant number, since it is smaller than the sum of its proper divisors (1260531724).

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

1143432020 is a wasteful number, since it uses less digits than its factorization.

1143432020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65639 (or 65637 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1143432020 is about 33814.6716677835. The cubic root of 1143432020 is about 1045.6911920315.

Adding to 1143432020 its reverse (202343411), we get a palindrome (1345775431).

The spelling of 1143432020 in words is "one billion, one hundred forty-three million, four hundred thirty-two thousand, twenty".