51628328 has 8 divisors (see below), whose sum is σ = 96803130. Its totient is φ = 25814160.

The previous prime is 51628327. The next prime is 51628393. The reversal of 51628328 is 82382615.

It can be written as a sum of positive squares in only one way, i.e., 51294244 + 334084 = 7162^2 + 578^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51628327) by changing a digit.

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, 3226763 + ... + 3226778.

Almost surely, 2^51628328 is an apocalyptic number.

It is an amenable number.

51628328 is a deficient number, since it is larger than the sum of its proper divisors (45174802).

51628328 is a wasteful number, since it uses less digits than its factorization.

51628328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6453547 (or 6453543 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 51628328 is about 7185.2855197271. The cubic root of 51628328 is about 372.3597129495.

The spelling of 51628328 in words is "fifty-one million, six hundred twenty-eight thousand, three hundred twenty-eight".