47993128 has 16 divisors (see below), whose sum is σ = 90528480. Its totient is φ = 23852208.

The previous prime is 47993087. The next prime is 47993147. The reversal of 47993128 is 82139974.

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 in 3 ways as a sum of consecutive naturals, for example, 16626 + ... + 19297.

It is an arithmetic number, because the mean of its divisors is an integer number (5658030).

Almost surely, 2^47993128 is an apocalyptic number.

It is an amenable number.

47993128 is a deficient number, since it is larger than the sum of its proper divisors (42535352).

47993128 is a wasteful number, since it uses less digits than its factorization.

47993128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36096 (or 36092 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 47993128 is about 6927.7072686423. The cubic root of 47993128 is about 363.4067743321.

The spelling of 47993128 in words is "forty-seven million, nine hundred ninety-three thousand, one hundred twenty-eight".