47787108 has 12 divisors (see below), whose sum is σ = 111503280. Its totient is φ = 15929032.

The previous prime is 47787101. The next prime is 47787143. The reversal of 47787108 is 80178774.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 47787108.

It is not an unprimeable number, because it can be changed into a prime (47787101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1991118 + ... + 1991141.

It is an arithmetic number, because the mean of its divisors is an integer number (9291940).

Almost surely, 2^47787108 is an apocalyptic number.

It is an amenable number.

47787108 is an abundant number, since it is smaller than the sum of its proper divisors (63716172).

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

47787108 is a wasteful number, since it uses less digits than its factorization.

47787108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982266 (or 3982264 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 42.

The square root of 47787108 is about 6912.8219997335. The cubic root of 47787108 is about 362.8860299875.

It can be divided in two parts, 47787 and 108, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 47787108 in words is "forty-seven million, seven hundred eighty-seven thousand, one hundred eight".