227216385 has 24 divisors (see below), whose sum is σ = 429646464. Its totient is φ = 110165280.

The previous prime is 227216351. The next prime is 227216411. The reversal of 227216385 is 583612722.

227216385 is a `hidden beast` number, since 2 + 272 + 1 + 6 + 385 = 666.

It is not a de Polignac number, because 227216385 - 2⁶ = 227216321 is a prime.

It is a super-2 number, since 2×227216385² = 103254571224936450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229017 + ... + 230006.

It is an arithmetic number, because the mean of its divisors is an integer number (17901936).

Almost surely, 2^227216385 is an apocalyptic number.

It is an amenable number.

227216385 is a deficient number, since it is larger than the sum of its proper divisors (202430079).

227216385 is a wasteful number, since it uses less digits than its factorization.

227216385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459045 (or 459042 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 227216385 is about 15073.6984512760. The cubic root of 227216385 is about 610.2107889278.

It can be divided in two parts, 227 and 216385, that added together give a palindrome (216612).

The spelling of 227216385 in words is "two hundred twenty-seven million, two hundred sixteen thousand, three hundred eighty-five".