216633830 has 16 divisors (see below), whose sum is σ = 445646880. Its totient is φ = 74274432.

The previous prime is 216633821. The next prime is 216633841. The reversal of 216633830 is 38336612.

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, 1547315 + ... + 1547454.

It is an arithmetic number, because the mean of its divisors is an integer number (27852930).

Almost surely, 2^216633830 is an apocalyptic number.

216633830 is an abundant number, since it is smaller than the sum of its proper divisors (229013050).

216633830 is a wasteful number, since it uses less digits than its factorization.

216633830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094783.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 216633830 is about 14718.4859955092. The cubic root of 216633830 is about 600.5863065175.

The spelling of 216633830 in words is "two hundred sixteen million, six hundred thirty-three thousand, eight hundred thirty".