47666880 has 168 divisors, whose sum is σ = 170303952. Its totient is φ = 12690432.

The previous prime is 47666869. The next prime is 47666891. The reversal of 47666880 is 8866674.

It is a happy number.

47666880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47666869) and next prime (47666891).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 23 ways as a sum of consecutive naturals, for example, 77454 + ... + 78066.

It is an arithmetic number, because the mean of its divisors is an integer number (1013714).

Almost surely, 2^47666880 is an apocalyptic number.

47666880 is a gapful number since it is divisible by the number (40) 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 47666880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85151976).

47666880 is an abundant number, since it is smaller than the sum of its proper divisors (122637072).

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

47666880 is an equidigital number, since it uses as much as digits as its factorization.

47666880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 47666880 is about 6904.1205087976. The cubic root of 47666880 is about 362.5814450372.

The spelling of 47666880 in words is "forty-seven million, six hundred sixty-six thousand, eight hundred eighty".