18472226 has 8 divisors (see below), whose sum is σ = 27977664. Its totient is φ = 9146340.

The previous prime is 18472189. The next prime is 18472247. The reversal of 18472226 is 62227481.

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 = 18472192 and 18472201.

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, 44630 + ... + 45041.

It is an arithmetic number, because the mean of its divisors is an integer number (3497208).

Almost surely, 2^18472226 is an apocalyptic number.

18472226 is a deficient number, since it is larger than the sum of its proper divisors (9505438).

18472226 is a wasteful number, since it uses less digits than its factorization.

18472226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89776.

The product of its digits is 10752, while the sum is 32.

The square root of 18472226 is about 4297.9327588970. The cubic root of 18472226 is about 264.3462036644.

The spelling of 18472226 in words is "eighteen million, four hundred seventy-two thousand, two hundred twenty-six".