216524226 has 16 divisors (see below), whose sum is σ = 433193184. Its totient is φ = 72150624.

The previous prime is 216524219. The next prime is 216524279. The reversal of 216524226 is 622425612.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216524193 and 216524202.

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, 29766 + ... + 36318.

It is an arithmetic number, because the mean of its divisors is an integer number (27074574).

Almost surely, 2^216524226 is an apocalyptic number.

216524226 is an abundant number, since it is smaller than the sum of its proper divisors (216668958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216524226 is a wasteful number, since it uses less digits than its factorization.

216524226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12065.

The product of its digits is 11520, while the sum is 30.

The square root of 216524226 is about 14714.7621795257. The cubic root of 216524226 is about 600.4850022934.

Adding to 216524226 its reverse (622425612), we get a palindrome (838949838).

It can be divided in two parts, 21652 and 4226, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 216524226 in words is "two hundred sixteen million, five hundred twenty-four thousand, two hundred twenty-six".