22471018 has 8 divisors (see below), whose sum is σ = 33949440. Its totient is φ = 11154540.

The previous prime is 22471013. The next prime is 22471021. The reversal of 22471018 is 81017422.

It is a happy number.

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 = 22470983 and 22471001.

It is not an unprimeable number, because it can be changed into a prime (22471013) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 40138 + ... + 40693.

It is an arithmetic number, because the mean of its divisors is an integer number (4243680).

Almost surely, 2^22471018 is an apocalyptic number.

22471018 is a deficient number, since it is larger than the sum of its proper divisors (11478422).

22471018 is a wasteful number, since it uses less digits than its factorization.

22471018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80972.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 22471018 is about 4740.3605348117. The cubic root of 22471018 is about 282.1895427770.

The spelling of 22471018 in words is "twenty-two million, four hundred seventy-one thousand, eighteen".