32280240 has 80 divisors (see below), whose sum is σ = 105350400. Its totient is φ = 8153856.

The previous prime is 32280239. The next prime is 32280319. The reversal of 32280240 is 4208223.

It is a tau number, because it is divible by the number of its divisors (80).

It is a nialpdrome in base 12.

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 15 ways as a sum of consecutive naturals, for example, 1021 + ... + 8099.

It is an arithmetic number, because the mean of its divisors is an integer number (1316880).

Almost surely, 2^32280240 is an apocalyptic number.

32280240 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 32280240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52675200).

32280240 is an abundant number, since it is smaller than the sum of its proper divisors (73070160).

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

32280240 is a wasteful number, since it uses less digits than its factorization.

32280240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7114 (or 7108 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 32280240 is about 5681.5702054978. The cubic root of 32280240 is about 318.4042957090.

Adding to 32280240 its reverse (4208223), we get a palindrome (36488463).

The spelling of 32280240 in words is "thirty-two million, two hundred eighty thousand, two hundred forty".