216648830 has 16 divisors (see below), whose sum is σ = 410492880. Its totient is φ = 82098432.

The previous prime is 216648829. The next prime is 216648847. The reversal of 216648830 is 38846612.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569939 + ... + 570318.

It is an arithmetic number, because the mean of its divisors is an integer number (25655805).

Almost surely, 2^216648830 is an apocalyptic number.

216648830 is a deficient number, since it is larger than the sum of its proper divisors (193844050).

216648830 is a wasteful number, since it uses less digits than its factorization.

216648830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140283.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 216648830 is about 14718.9955499688. The cubic root of 216648830 is about 600.6001679823.

The spelling of 216648830 in words is "two hundred sixteen million, six hundred forty-eight thousand, eight hundred thirty".