32640115 has 4 divisors (see below), whose sum is σ = 39168144. Its totient is φ = 26112088.

The previous prime is 32640107. The next prime is 32640121. The reversal of 32640115 is 51104623.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51104623 = 19 ⋅2689717.

It is a cyclic number.

It is not a de Polignac number, because 32640115 - 2³ = 32640107 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 3264007 + ... + 3264016.

It is an arithmetic number, because the mean of its divisors is an integer number (9792036).

Almost surely, 2^32640115 is an apocalyptic number.

32640115 is a deficient number, since it is larger than the sum of its proper divisors (6528029).

32640115 is an equidigital number, since it uses as much as digits as its factorization.

32640115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6528028.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 32640115 is about 5713.1528073385. The cubic root of 32640115 is about 319.5831649447.

Adding to 32640115 its reverse (51104623), we get a palindrome (83744738).

The spelling of 32640115 in words is "thirty-two million, six hundred forty thousand, one hundred fifteen".