32640375 has 16 divisors (see below), whose sum is σ = 54314208. Its totient is φ = 17408000.

The previous prime is 32640373. The next prime is 32640379. The reversal of 32640375 is 57304623.

It is not a de Polignac number, because 32640375 - 2¹ = 32640373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32640373) 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, 43146 + ... + 43895.

It is an arithmetic number, because the mean of its divisors is an integer number (3394638).

Almost surely, 2^32640375 is an apocalyptic number.

32640375 is a deficient number, since it is larger than the sum of its proper divisors (21673833).

32640375 is an equidigital number, since it uses as much as digits as its factorization.

32640375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87059 (or 87049 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 32640375 is about 5713.1755618045. The cubic root of 32640375 is about 319.5840135059.

Adding to 32640375 its reverse (57304623), we get a palindrome (89944998).

The spelling of 32640375 in words is "thirty-two million, six hundred forty thousand, three hundred seventy-five".