32120440 has 64 divisors (see below), whose sum is σ = 81012960. Its totient is φ = 11358720.

The previous prime is 32120423. The next prime is 32120449. The reversal of 32120440 is 4402123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32120449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15294 + ... + 17266.

Almost surely, 2^32120440 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 32120440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40506480).

32120440 is an abundant number, since it is smaller than the sum of its proper divisors (48892520).

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

32120440 is a wasteful number, since it uses less digits than its factorization.

32120440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032 (or 2028 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 32120440 is about 5667.4897441460. The cubic root of 32120440 is about 317.8780171092.

Adding to 32120440 its reverse (4402123), we get a palindrome (36522563).

The spelling of 32120440 in words is "thirty-two million, one hundred twenty thousand, four hundred forty".