216244747 has 8 divisors (see below), whose sum is σ = 223690752. Its totient is φ = 208828200.

The previous prime is 216244729. The next prime is 216244751. The reversal of 216244747 is 747442612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216244747 - 2¹¹ = 216242699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216244247) by changing a digit.

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, 8118 + ... + 22324.

It is an arithmetic number, because the mean of its divisors is an integer number (27961344).

Almost surely, 2^216244747 is an apocalyptic number.

216244747 is a deficient number, since it is larger than the sum of its proper divisors (7446005).

216244747 is a wasteful number, since it uses less digits than its factorization.

216244747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14729.

The product of its digits is 75264, while the sum is 37.

The square root of 216244747 is about 14705.2625614098. The cubic root of 216244747 is about 600.2265320539.

The spelling of 216244747 in words is "two hundred sixteen million, two hundred forty-four thousand, seven hundred forty-seven".