47478988 has 18 divisors (see below), whose sum is σ = 84150164. Its totient is φ = 23439864.

The previous prime is 47478931. The next prime is 47478997. The reversal of 47478988 is 88987474.

47478988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26695 + ... + 28417.

Almost surely, 2^47478988 is an apocalyptic number.

It is an amenable number.

47478988 is a deficient number, since it is larger than the sum of its proper divisors (36671176).

47478988 is a wasteful number, since it uses less digits than its factorization.

47478988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893 (or 1808 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 55.

The square root of 47478988 is about 6890.4998367317. The cubic root of 47478988 is about 362.1044131721.

The spelling of 47478988 in words is "forty-seven million, four hundred seventy-eight thousand, nine hundred eighty-eight".