47681418 has 8 divisors (see below), whose sum is σ = 95362848. Its totient is φ = 15893804.

The previous prime is 47681363. The next prime is 47681437. The reversal of 47681418 is 81418674.

It is a sphenic number, since it is the product of 3 distinct primes.

47681418 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3973446 + ... + 3973457.

It is an arithmetic number, because the mean of its divisors is an integer number (11920356).

Almost surely, 2^47681418 is an apocalyptic number.

47681418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

47681418 is a wasteful number, since it uses less digits than its factorization.

47681418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7946908.

The product of its digits is 43008, while the sum is 39.

The square root of 47681418 is about 6905.1732780575. The cubic root of 47681418 is about 362.6183027271.

The spelling of 47681418 in words is "forty-seven million, six hundred eighty-one thousand, four hundred eighteen".