47188908 has 72 divisors (see below), whose sum is σ = 130712400. Its totient is φ = 14265216.

The previous prime is 47188907. The next prime is 47188919. The reversal of 47188908 is 80988174.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (47188901) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 26758 + ... + 28466.

It is an arithmetic number, because the mean of its divisors is an integer number (1815450).

Almost surely, 2^47188908 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 47188908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65356200).

47188908 is an abundant number, since it is smaller than the sum of its proper divisors (83523492).

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

47188908 is a wasteful number, since it uses less digits than its factorization.

47188908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791 (or 1786 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 47188908 is about 6869.4183159857. The cubic root of 47188908 is about 361.3654624674.

The spelling of 47188908 in words is "forty-seven million, one hundred eighty-eight thousand, nine hundred eight".