2143440432 has 60 divisors (see below), whose sum is σ = 6855610320. Its totient is φ = 612411264.

The previous prime is 2143440421. The next prime is 2143440457. The reversal of 2143440432 is 2340443412.

It is a happy number.

2143440432 is a `hidden beast` number, since 214 + 3 + 440 + 4 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2143440396 and 2143440405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1062207 + ... + 1064222.

It is an arithmetic number, because the mean of its divisors is an integer number (114260172).

Almost surely, 2^2143440432 is an apocalyptic number.

It is an amenable number.

2143440432 is an abundant number, since it is smaller than the sum of its proper divisors (4712169888).

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

2143440432 is a wasteful number, since it uses less digits than its factorization.

2143440432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126450 (or 2126441 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 2143440432 is about 46297.3048027636. The cubic root of 2143440432 is about 1289.3489557806.

Adding to 2143440432 its reverse (2340443412), we get a palindrome (4483883844).

The spelling of 2143440432 in words is "two billion, one hundred forty-three million, four hundred forty thousand, four hundred thirty-two".