74218226 has 16 divisors (see below), whose sum is σ = 121063896. Its totient is φ = 33981696.

The previous prime is 74218219. The next prime is 74218253. The reversal of 74218226 is 62281247.

It is a Cunningham number, because it is equal to 8615²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 74218225 + 1 = 8615^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74218192 and 74218201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28241 + ... + 30756.

Almost surely, 2^74218226 is an apocalyptic number.

74218226 is a deficient number, since it is larger than the sum of its proper divisors (46845670).

74218226 is a wasteful number, since it uses less digits than its factorization.

74218226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59053.

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

The square root of 74218226 is about 8615.0000580383. Note that the first 4 decimals coincide. The cubic root of 74218226 is about 420.2459368370.

The spelling of 74218226 in words is "seventy-four million, two hundred eighteen thousand, two hundred twenty-six".