136216394 has 16 divisors (see below), whose sum is σ = 208359432. Its totient is φ = 66774528.

The previous prime is 136216361. The next prime is 136216417. The reversal of 136216394 is 493612631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 132549169 + 3667225 = 11513^2 + 1915^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22562 + ... + 27954.

Almost surely, 2^136216394 is an apocalyptic number.

136216394 is a deficient number, since it is larger than the sum of its proper divisors (72143038).

136216394 is a wasteful number, since it uses less digits than its factorization.

136216394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641.

The product of its digits is 23328, while the sum is 35.

The square root of 136216394 is about 11671.1779182737. The cubic root of 136216394 is about 514.5289235541.

The spelling of 136216394 in words is "one hundred thirty-six million, two hundred sixteen thousand, three hundred ninety-four".