52649728 has 18 divisors (see below), whose sum is σ = 105094304. Its totient is φ = 26324736.

The previous prime is 52649693. The next prime is 52649747. The reversal of 52649728 is 82794625.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 102576 + ... + 103087.

Almost surely, 2^52649728 is an apocalyptic number.

It is an amenable number.

52649728 is a deficient number, since it is larger than the sum of its proper divisors (52444576).

52649728 is an equidigital number, since it uses as much as digits as its factorization.

52649728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205679 (or 205665 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 52649728 is about 7256.0132304179. The cubic root of 52649728 is about 374.7992478079.

The spelling of 52649728 in words is "fifty-two million, six hundred forty-nine thousand, seven hundred twenty-eight".