47668918 has 24 divisors (see below), whose sum is σ = 83225016. Its totient is φ = 20391360.

The previous prime is 47668883. The next prime is 47668919. The reversal of 47668918 is 81986674.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47668919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1680 + ... + 9907.

It is an arithmetic number, because the mean of its divisors is an integer number (3467709).

Almost surely, 2^47668918 is an apocalyptic number.

47668918 is a deficient number, since it is larger than the sum of its proper divisors (35556098).

47668918 is a wasteful number, since it uses less digits than its factorization.

47668918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11628 (or 11617 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 47668918 is about 6904.2681002406. The cubic root of 47668918 is about 362.5866123599.

The spelling of 47668918 in words is "forty-seven million, six hundred sixty-eight thousand, nine hundred eighteen".