5181928 has 8 divisors (see below), whose sum is σ = 9716130. Its totient is φ = 2590960.

The previous prime is 5181919. The next prime is 5181941. The reversal of 5181928 is 8291815.

It can be written as a sum of positive squares in only one way, i.e., 4743684 + 438244 = 2178^2 + 662^2 .

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 = 5181893 and 5181902.

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, 323863 + ... + 323878.

Almost surely, 2^5181928 is an apocalyptic number.

It is an amenable number.

5181928 is a deficient number, since it is larger than the sum of its proper divisors (4534202).

5181928 is a wasteful number, since it uses less digits than its factorization.

5181928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647747 (or 647743 counting only the distinct ones).

The product of its digits is 5760, while the sum is 34.

The square root of 5181928 is about 2276.3848532267. The cubic root of 5181928 is about 173.0468871766.

The spelling of 5181928 in words is "five million, one hundred eighty-one thousand, nine hundred twenty-eight".