32440430440 has 64 divisors (see below), whose sum is σ = 80634528000. Its totient is φ = 11647184640.

The previous prime is 32440430417. The next prime is 32440430461. The reversal of 32440430440 is 4403404423.

It is a junction number, because it is equal to n+sod(n) for n = 32440430399 and 32440430408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431875 + ... + 501394.

It is an arithmetic number, because the mean of its divisors is an integer number (1259914500).

Almost surely, 2^32440430440 is an apocalyptic number.

It is an amenable number.

32440430440 is an abundant number, since it is smaller than the sum of its proper divisors (48194097560).

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

32440430440 is a wasteful number, since it uses less digits than its factorization.

32440430440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933370 (or 933366 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 32440430440 its reverse (4403404423), we get a palindrome (36843834863).

The spelling of 32440430440 in words is "thirty-two billion, four hundred forty million, four hundred thirty thousand, four hundred forty".