53303728 has 20 divisors (see below), whose sum is σ = 103899600. Its totient is φ = 26490944.

The previous prime is 53303713. The next prime is 53303741. The reversal of 53303728 is 82730335.

53303728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 53303728.

It is an unprimeable number.

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, 7303 + ... + 12646.

It is an arithmetic number, because the mean of its divisors is an integer number (5194980).

Almost surely, 2^53303728 is an apocalyptic number.

It is an amenable number.

53303728 is a deficient number, since it is larger than the sum of its proper divisors (50595872).

53303728 is a wasteful number, since it uses less digits than its factorization.

53303728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20124 (or 20118 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 53303728 is about 7300.9402134246. The cubic root of 53303728 is about 376.3447494477.

The spelling of 53303728 in words is "fifty-three million, three hundred three thousand, seven hundred twenty-eight".