53106728 has 8 divisors (see below), whose sum is σ = 99575130. Its totient is φ = 26553360.

The previous prime is 53106727. The next prime is 53106731. The reversal of 53106728 is 82760135.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 41964484 + 11142244 = 6478^2 + 3338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 53106694 and 53106703.

It is not an unprimeable number, because it can be changed into a prime (53106721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3319163 + ... + 3319178.

Almost surely, 2^53106728 is an apocalyptic number.

It is an amenable number.

53106728 is a deficient number, since it is larger than the sum of its proper divisors (46468402).

53106728 is a wasteful number, since it uses less digits than its factorization.

53106728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638347 (or 6638343 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 53106728 is about 7287.4363119001. The cubic root of 53106728 is about 375.8805452736.

The spelling of 53106728 in words is "fifty-three million, one hundred six thousand, seven hundred twenty-eight".