52728613 has 8 divisors (see below), whose sum is σ = 62205440. Its totient is φ = 43737840.

The previous prime is 52728593. The next prime is 52728619. The reversal of 52728613 is 31682725.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52728613 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 (52728619) 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, 121278 + ... + 121711.

It is an arithmetic number, because the mean of its divisors is an integer number (7775680).

Almost surely, 2^52728613 is an apocalyptic number.

It is an amenable number.

52728613 is a deficient number, since it is larger than the sum of its proper divisors (9476827).

52728613 is a wasteful number, since it uses less digits than its factorization.

52728613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243027.

The product of its digits is 20160, while the sum is 34.

The square root of 52728613 is about 7261.4470321004. The cubic root of 52728613 is about 374.9863414284.

The spelling of 52728613 in words is "fifty-two million, seven hundred twenty-eight thousand, six hundred thirteen".