32040240 has 80 divisors (see below), whose sum is σ = 105180768. Its totient is φ = 8040448.

The previous prime is 32040209. The next prime is 32040247. The reversal of 32040240 is 4204023.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (32040247) 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, 154 + ... + 8006.

Almost surely, 2^32040240 is an apocalyptic number.

32040240 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 32040240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52590384).

32040240 is an abundant number, since it is smaller than the sum of its proper divisors (73140528).

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

32040240 is a wasteful number, since it uses less digits than its factorization.

32040240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7886 (or 7880 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 32040240 is about 5660.4098791519. The cubic root of 32040240 is about 317.6132317726.

Adding to 32040240 its reverse (4204023), we get a palindrome (36244263).

The spelling of 32040240 in words is "thirty-two million, forty thousand, two hundred forty".