32123440 has 40 divisors (see below), whose sum is σ = 77102208. Its totient is φ = 12433920.

The previous prime is 32123423. The next prime is 32123447. The reversal of 32123440 is 4432123.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (32123447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3997 + ... + 8956.

Almost surely, 2^32123440 is an apocalyptic number.

It is an amenable number.

32123440 is an abundant number, since it is smaller than the sum of its proper divisors (44978768).

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

32123440 is a wasteful number, since it uses less digits than its factorization.

32123440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12997 (or 12991 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 32123440 is about 5667.7544054061. The cubic root of 32123440 is about 317.8879132414.

Adding to 32123440 its reverse (4432123), we get a palindrome (36555563).

The spelling of 32123440 in words is "thirty-two million, one hundred twenty-three thousand, four hundred forty".