216650260 has 24 divisors (see below), whose sum is σ = 464647680. Its totient is φ = 84815904.

The previous prime is 216650249. The next prime is 216650299. The reversal of 216650260 is 62056612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114300 + ... + 116179.

It is an arithmetic number, because the mean of its divisors is an integer number (19360320).

Almost surely, 2^216650260 is an apocalyptic number.

216650260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216650260 is an abundant number, since it is smaller than the sum of its proper divisors (247997420).

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

216650260 is a wasteful number, since it uses less digits than its factorization.

216650260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230535 (or 230533 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 216650260 is about 14719.0441265729. The cubic root of 216650260 is about 600.6014894086.

The spelling of 216650260 in words is "two hundred sixteen million, six hundred fifty thousand, two hundred sixty".