7216187 has 8 divisors (see below), whose sum is σ = 7947072. Its totient is φ = 6497800.

The previous prime is 7216169. The next prime is 7216193. The reversal of 7216187 is 7816127.

7216187 is nontrivially palindromic in base 2.

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 7216187 - 2¹⁶ = 7150651 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7216787) 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, 1889 + ... + 4242.

It is an arithmetic number, because the mean of its divisors is an integer number (993384).

Almost surely, 2^7216187 is an apocalyptic number.

7216187 is a deficient number, since it is larger than the sum of its proper divisors (730885).

7216187 is a wasteful number, since it uses less digits than its factorization.

7216187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249.

The product of its digits is 4704, while the sum is 32.

The square root of 7216187 is about 2686.2961489754. The cubic root of 7216187 is about 193.2424758044.

The spelling of 7216187 in words is "seven million, two hundred sixteen thousand, one hundred eighty-seven".