32506013 has 8 divisors (see below), whose sum is σ = 34263000. Its totient is φ = 30791488.

The previous prime is 32506003. The next prime is 32506021. The reversal of 32506013 is 31060523.

It can be written as a sum of positive squares in 4 ways, for example, as 2617924 + 29888089 = 1618^2 + 5467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32506013 - 2¹⁴ = 32489629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32506003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9038 + ... + 12111.

It is an arithmetic number, because the mean of its divisors is an integer number (4282875).

Almost surely, 2^32506013 is an apocalyptic number.

It is an amenable number.

32506013 is a deficient number, since it is larger than the sum of its proper divisors (1756987).

32506013 is a wasteful number, since it uses less digits than its factorization.

32506013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21231.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 32506013 is about 5701.4044760918. The cubic root of 32506013 is about 319.1448947542.

Adding to 32506013 its reverse (31060523), we get a palindrome (63566536).

The spelling of 32506013 in words is "thirty-two million, five hundred six thousand, thirteen".