47911808 has 48 divisors (see below), whose sum is σ = 111047400. Its totient is φ = 20530944.

The previous prime is 47911793. The next prime is 47911811. The reversal of 47911808 is 80811974.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 2453 + ... + 10091.

Almost surely, 2^47911808 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 47911808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55523700).

47911808 is an abundant number, since it is smaller than the sum of its proper divisors (63135592).

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

47911808 is an equidigital number, since it uses as much as digits as its factorization.

47911808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7667 (or 7648 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 47911808 is about 6921.8355946960. The cubic root of 47911808 is about 363.2014050286.

The spelling of 47911808 in words is "forty-seven million, nine hundred eleven thousand, eight hundred eight".