47222918 has 8 divisors (see below), whose sum is σ = 71392512. Its totient is φ = 23425416.

The previous prime is 47222911. The next prime is 47222927. The reversal of 47222918 is 81922274.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47222911) 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, 92705 + ... + 93212.

It is an arithmetic number, because the mean of its divisors is an integer number (8924064).

Almost surely, 2^47222918 is an apocalyptic number.

47222918 is a deficient number, since it is larger than the sum of its proper divisors (24169594).

47222918 is a wasteful number, since it uses less digits than its factorization.

47222918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186046.

The product of its digits is 16128, while the sum is 35.

The square root of 47222918 is about 6871.8933344458. The cubic root of 47222918 is about 361.4522560843.

The spelling of 47222918 in words is "forty-seven million, two hundred twenty-two thousand, nine hundred eighteen".