32481728 has 28 divisors (see below), whose sum is σ = 64648080. Its totient is φ = 16192512.

The previous prime is 32481721. The next prime is 32481733. The reversal of 32481728 is 82718423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32481721) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31688 + ... + 32696.

It is an arithmetic number, because the mean of its divisors is an integer number (2308860).

Almost surely, 2^32481728 is an apocalyptic number.

It is an amenable number.

32481728 is a deficient number, since it is larger than the sum of its proper divisors (32166352).

32481728 is a wasteful number, since it uses less digits than its factorization.

32481728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524 (or 1514 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 32481728 is about 5699.2743397734. The cubic root of 32481728 is about 319.0653980298.

The spelling of 32481728 in words is "thirty-two million, four hundred eighty-one thousand, seven hundred twenty-eight".