216402030226 has 16 divisors (see below), whose sum is σ = 331050483288. Its totient is φ = 106063977600.

The previous prime is 216402030199. The next prime is 216402030301. The reversal of 216402030226 is 622030204612.

It can be written as a sum of positive squares in 4 ways, for example, as 182415264201 + 33986766025 = 427101^2 + 184355^2 .

It is a super-2 number, since 2×216402030226² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216402030194 and 216402030203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2991195 + ... + 3062686.

Almost surely, 2^216402030226 is an apocalyptic number.

216402030226 is a deficient number, since it is larger than the sum of its proper divisors (114648453062).

216402030226 is a wasteful number, since it uses less digits than its factorization.

216402030226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054237.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 216402030226 its reverse (622030204612), we get a palindrome (838432234838).

The spelling of 216402030226 in words is "two hundred sixteen billion, four hundred two million, thirty thousand, two hundred twenty-six".