216255260 has 24 divisors (see below), whose sum is σ = 489070176. Its totient is φ = 79848000.

The previous prime is 216255257. The next prime is 216255271. The reversal of 216255260 is 62552612.

It is a congruent number.

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, 415616 + ... + 416135.

It is an arithmetic number, because the mean of its divisors is an integer number (20377924).

Almost surely, 2^216255260 is an apocalyptic number.

216255260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216255260 is an abundant number, since it is smaller than the sum of its proper divisors (272814916).

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

216255260 is a wasteful number, since it uses less digits than its factorization.

216255260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831773 (or 831771 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 216255260 is about 14705.6200141307. The cubic root of 216255260 is about 600.2362588093.

It can be divided in two parts, 2162552 and 60, that added together give a palindrome (2162612).

The spelling of 216255260 in words is "two hundred sixteen million, two hundred fifty-five thousand, two hundred sixty".