52728861 has 8 divisors (see below), whose sum is σ = 72573184. Its totient is φ = 34018560.

The previous prime is 52728839. The next prime is 52728881. The reversal of 52728861 is 16882725.

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

It is not a de Polignac number, because 52728861 - 2⁷ = 52728733 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 (52728881) 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, 283396 + ... + 283581.

It is an arithmetic number, because the mean of its divisors is an integer number (9071648).

Almost surely, 2^52728861 is an apocalyptic number.

It is an amenable number.

52728861 is a deficient number, since it is larger than the sum of its proper divisors (19844323).

52728861 is a wasteful number, since it uses less digits than its factorization.

52728861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567011.

The product of its digits is 53760, while the sum is 39.

The square root of 52728861 is about 7261.4641085665. The cubic root of 52728861 is about 374.9869293222.

The spelling of 52728861 in words is "fifty-two million, seven hundred twenty-eight thousand, eight hundred sixty-one".