47668138 has 8 divisors (see below), whose sum is σ = 81716832. Its totient is φ = 20429196.

The previous prime is 47668079. The next prime is 47668139. The reversal of 47668138 is 83186674.

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

It is a junction number, because it is equal to n+sod(n) for n = 47668094 and 47668103.

It is not an unprimeable number, because it can be changed into a prime (47668139) 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, 1702420 + ... + 1702447.

It is an arithmetic number, because the mean of its divisors is an integer number (10214604).

Almost surely, 2^47668138 is an apocalyptic number.

47668138 is a deficient number, since it is larger than the sum of its proper divisors (34048694).

47668138 is a wasteful number, since it uses less digits than its factorization.

47668138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404876.

The product of its digits is 193536, while the sum is 43.

The square root of 47668138 is about 6904.2116132112. The cubic root of 47668138 is about 362.5846346974.

The spelling of 47668138 in words is "forty-seven million, six hundred sixty-eight thousand, one hundred thirty-eight".