18226256 has 10 divisors (see below), whose sum is σ = 35313402. Its totient is φ = 9113120.

The previous prime is 18226249. The next prime is 18226259. The reversal of 18226256 is 65262281.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 7203856 = 3320^2 + 2684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18226259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569555 + ... + 569586.

Almost surely, 2^18226256 is an apocalyptic number.

18226256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18226256 is a deficient number, since it is larger than the sum of its proper divisors (17087146).

18226256 is a wasteful number, since it uses less digits than its factorization.

18226256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139149 (or 1139143 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 18226256 is about 4269.2219431648. The cubic root of 18226256 is about 263.1676416769.

The spelling of 18226256 in words is "eighteen million, two hundred twenty-six thousand, two hundred fifty-six".