32655640 has 32 divisors (see below), whose sum is σ = 77798880. Its totient is φ = 12293632.

The previous prime is 32655631. The next prime is 32655643. The reversal of 32655640 is 4655623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32655643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23332 + ... + 24691.

It is an arithmetic number, because the mean of its divisors is an integer number (2431215).

Almost surely, 2^32655640 is an apocalyptic number.

It is an amenable number.

32655640 is an abundant number, since it is smaller than the sum of its proper divisors (45143240).

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

32655640 is a wasteful number, since it uses less digits than its factorization.

32655640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48051 (or 48047 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 32655640 is about 5714.5113526880. The cubic root of 32655640 is about 319.6338259407.

The spelling of 32655640 in words is "thirty-two million, six hundred fifty-five thousand, six hundred forty".