216236260 has 24 divisors (see below), whose sum is σ = 480808440. Its totient is φ = 81406464.

The previous prime is 216236231. The next prime is 216236261. The reversal of 216236260 is 62632612.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2842596 + 213393664 = 1686^2 + 14608^2 .

It is not an unprimeable number, because it can be changed into a prime (216236261) 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, 317655 + ... + 318334.

It is an arithmetic number, because the mean of its divisors is an integer number (20033685).

Almost surely, 2^216236260 is an apocalyptic number.

216236260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216236260 is an abundant number, since it is smaller than the sum of its proper divisors (264572180).

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

216236260 is a wasteful number, since it uses less digits than its factorization.

216236260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636015 (or 636013 counting only the distinct ones).

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

The square root of 216236260 is about 14704.9739884163. The cubic root of 216236260 is about 600.2186795483.

Adding to 216236260 its reverse (62632612), we get a palindrome (278868872).

The spelling of 216236260 in words is "two hundred sixteen million, two hundred thirty-six thousand, two hundred sixty".