32530440 has 64 divisors (see below), whose sum is σ = 98496000. Its totient is φ = 8594432.

The previous prime is 32530429. The next prime is 32530447. The reversal of 32530440 is 4403523.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32530447) 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, 12361 + ... + 14759.

It is an arithmetic number, because the mean of its divisors is an integer number (1539000).

Almost surely, 2^32530440 is an apocalyptic number.

32530440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32530440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49248000).

32530440 is an abundant number, since it is smaller than the sum of its proper divisors (65965560).

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

32530440 is a wasteful number, since it uses less digits than its factorization.

32530440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526 (or 2522 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 32530440 is about 5703.5462652634. The cubic root of 32530440 is about 319.2248163820.

Adding to 32530440 its reverse (4403523), we get a palindrome (36933963).

The spelling of 32530440 in words is "thirty-two million, five hundred thirty thousand, four hundred forty".