216127366 has 32 divisors (see below), whose sum is σ = 416360448. Its totient is φ = 81781920.

The previous prime is 216127339. The next prime is 216127367. The reversal of 216127366 is 663721612.

It is a happy number.

It is a super-2 number, since 2×216127366² = 93422076668195912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216127367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21630 + ... + 30001.

It is an arithmetic number, because the mean of its divisors is an integer number (13011264).

Almost surely, 2^216127366 is an apocalyptic number.

216127366 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

216127366 is a deficient number, since it is larger than the sum of its proper divisors (200233082).

216127366 is a wasteful number, since it uses less digits than its factorization.

216127366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51676.

The product of its digits is 18144, while the sum is 34.

The square root of 216127366 is about 14701.2708974428. The cubic root of 216127366 is about 600.1179083093.

Adding to 216127366 its reverse (663721612), we get a palindrome (879848978).

The spelling of 216127366 in words is "two hundred sixteen million, one hundred twenty-seven thousand, three hundred sixty-six".