53605728 has 72 divisors (see below), whose sum is σ = 166309416. Its totient is φ = 16243200.

The previous prime is 53605723. The next prime is 53605729. The reversal of 53605728 is 82750635.

53605728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 53605692 and 53605701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53605723) 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 in 11 ways as a sum of consecutive naturals, for example, 5293 + ... + 11628.

It is an arithmetic number, because the mean of its divisors is an integer number (2309853).

Almost surely, 2^53605728 is an apocalyptic number.

It is an amenable number.

53605728 is an abundant number, since it is smaller than the sum of its proper divisors (112703688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53605728 is a wasteful number, since it uses less digits than its factorization.

53605728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16948 (or 16937 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 53605728 is about 7321.5932692277. The cubic root of 53605728 is about 377.0541566293.

The spelling of 53605728 in words is "fifty-three million, six hundred five thousand, seven hundred twenty-eight".