47687808 has 128 divisors (see below), whose sum is σ = 146977920. Its totient is φ = 13418496.

The previous prime is 47687767. The next prime is 47687813. The reversal of 47687808 is 80878674.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

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 15 ways as a sum of consecutive naturals, for example, 303666 + ... + 303822.

It is an arithmetic number, because the mean of its divisors is an integer number (1148265).

Almost surely, 2^47687808 is an apocalyptic number.

47687808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47687808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73488960).

47687808 is an abundant number, since it is smaller than the sum of its proper divisors (99290112).

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

47687808 is a wasteful number, since it uses less digits than its factorization.

47687808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 47687808 is about 6905.6359591279. The cubic root of 47687808 is about 362.6345007035.

The spelling of 47687808 in words is "forty-seven million, six hundred eighty-seven thousand, eight hundred eight".