32540393 has 4 divisors (see below), whose sum is σ = 32670288. Its totient is φ = 32410500.

The previous prime is 32540381. The next prime is 32540413. The reversal of 32540393 is 39304523.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32540393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (32540303) 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, 64571 + ... + 65072.

It is an arithmetic number, because the mean of its divisors is an integer number (8167572).

Almost surely, 2^32540393 is an apocalyptic number.

It is an amenable number.

32540393 is a deficient number, since it is larger than the sum of its proper divisors (129895).

32540393 is a wasteful number, since it uses less digits than its factorization.

32540393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129894.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 32540393 is about 5704.4187258651. The cubic root of 32540393 is about 319.2573696933.

The spelling of 32540393 in words is "thirty-two million, five hundred forty thousand, three hundred ninety-three".