32424140 has 72 divisors (see below), whose sum is σ = 80742816. Its totient is φ = 10713600.

The previous prime is 32424137. The next prime is 32424163. The reversal of 32424140 is 4142423.

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

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 23 ways as a sum of consecutive naturals, for example, 134420 + ... + 134660.

It is an arithmetic number, because the mean of its divisors is an integer number (1121428).

Almost surely, 2^32424140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32424140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40371408).

32424140 is an abundant number, since it is smaller than the sum of its proper divisors (48318676).

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

32424140 is a wasteful number, since it uses less digits than its factorization.

32424140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 32424140 is about 5694.2198763307. The cubic root of 32424140 is about 318.8767257226.

Adding to 32424140 its reverse (4142423), we get a palindrome (36566563).

The spelling of 32424140 in words is "thirty-two million, four hundred twenty-four thousand, one hundred forty".