243430226 has 16 divisors (see below), whose sum is σ = 396240768. Its totient is φ = 111493200.

The previous prime is 243430217. The next prime is 243430237. The reversal of 243430226 is 622034342.

It is a super-2 number, since 2×243430226² = 118516549860822152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 243430195 and 243430204.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32330 + ... + 39141.

It is an arithmetic number, because the mean of its divisors is an integer number (24765048).

Almost surely, 2^243430226 is an apocalyptic number.

243430226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

243430226 is a deficient number, since it is larger than the sum of its proper divisors (152810542).

243430226 is a wasteful number, since it uses less digits than its factorization.

243430226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71617.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 243430226 is about 15602.2506709769. The cubic root of 243430226 is about 624.3932039216.

Adding to 243430226 its reverse (622034342), we get a palindrome (865464568).

The spelling of 243430226 in words is "two hundred forty-three million, four hundred thirty thousand, two hundred twenty-six".