32430440 has 32 divisors (see below), whose sum is σ = 83393280. Its totient is φ = 11118912.

The previous prime is 32430427. The next prime is 32430449. The reversal of 32430440 is 4403423.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (32430449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57632 + ... + 58191.

It is an arithmetic number, because the mean of its divisors is an integer number (2606040).

Almost surely, 2^32430440 is an apocalyptic number.

It is an amenable number.

32430440 is an abundant number, since it is smaller than the sum of its proper divisors (50962840).

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

32430440 is a wasteful number, since it uses less digits than its factorization.

32430440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115841 (or 115837 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 32430440 is about 5694.7730420097. The cubic root of 32430440 is about 318.8973769337.

Adding to 32430440 its reverse (4403423), we get a palindrome (36833863).

The spelling of 32430440 in words is "thirty-two million, four hundred thirty thousand, four hundred forty".