47216988 has 216 divisors, whose sum is σ = 156854880. Its totient is φ = 11854080.

The previous prime is 47216971. The next prime is 47216993. The reversal of 47216988 is 88961274.

47216988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 664993 + ... + 665063.

It is an arithmetic number, because the mean of its divisors is an integer number (726180).

Almost surely, 2^47216988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47216988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78427440).

47216988 is an abundant number, since it is smaller than the sum of its proper divisors (109637892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47216988 is a wasteful number, since it uses less digits than its factorization.

47216988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 125 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 47216988 is about 6871.4618532013. The cubic root of 47216988 is about 361.4371257077.

The spelling of 47216988 in words is "forty-seven million, two hundred sixteen thousand, nine hundred eighty-eight".