216136 has 8 divisors (see below), whose sum is σ = 405270. Its totient is φ = 108064.

The previous prime is 216133. The next prime is 216149. The reversal of 216136 is 631612.

It can be written as a sum of positive squares in only one way, i.e., 122500 + 93636 = 350^2 + 306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (216133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13501 + ... + 13516.

2²¹⁶¹³⁶ is an apocalyptic number.

It is an amenable number.

216136 is a deficient number, since it is larger than the sum of its proper divisors (189134).

216136 is a wasteful number, since it uses less digits than its factorization.

216136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27023 (or 27019 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 216136 is about 464.9042912256. The cubic root of 216136 is about 60.0125899506.

Adding to 216136 its reverse (631612), we get a palindrome (847748).

It can be divided in two parts, 2161 and 36, that added together give a cube (2197 = 13³).

The spelling of 216136 in words is "two hundred sixteen thousand, one hundred thirty-six".