52728818 has 4 divisors (see below), whose sum is σ = 79093230. Its totient is φ = 26364408.

The previous prime is 52728817. The next prime is 52728833. The reversal of 52728818 is 81882725.

52728818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 33953929 + 18774889 = 5827^2 + 4333^2 .

It is not an unprimeable number, because it can be changed into a prime (52728817) 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 as a sum of consecutive naturals, namely, 13182203 + ... + 13182206.

Almost surely, 2^52728818 is an apocalyptic number.

52728818 is a deficient number, since it is larger than the sum of its proper divisors (26364412).

52728818 is a wasteful number, since it uses less digits than its factorization.

52728818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26364411.

The product of its digits is 71680, while the sum is 41.

The square root of 52728818 is about 7261.4611477305. The cubic root of 52728818 is about 374.9868273891.

The spelling of 52728818 in words is "fifty-two million, seven hundred twenty-eight thousand, eight hundred eighteen".