216326026 has 16 divisors (see below), whose sum is σ = 371286720. Its totient is φ = 92600640.

The previous prime is 216326023. The next prime is 216326053. The reversal of 216326026 is 620623612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 216325985 and 216326003.

It is not an unprimeable number, because it can be changed into a prime (216326023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3565 + ... + 21103.

It is an arithmetic number, because the mean of its divisors is an integer number (23205420).

Almost surely, 2^216326026 is an apocalyptic number.

216326026 is a deficient number, since it is larger than the sum of its proper divisors (154960694).

216326026 is a wasteful number, since it uses less digits than its factorization.

216326026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18429.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 216326026 is about 14708.0259042470. The cubic root of 216326026 is about 600.3017241714.

Adding to 216326026 its reverse (620623612), we get a palindrome (836949638).

The spelling of 216326026 in words is "two hundred sixteen million, three hundred twenty-six thousand, twenty-six".