216136436 has 24 divisors (see below), whose sum is σ = 404389440. Its totient is φ = 100720512.

The previous prime is 216136423. The next prime is 216136463. The reversal of 216136436 is 634631612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8426 + ... + 22433.

It is an arithmetic number, because the mean of its divisors is an integer number (16849560).

Almost surely, 2^216136436 is an apocalyptic number.

It is an amenable number.

216136436 is a deficient number, since it is larger than the sum of its proper divisors (188253004).

216136436 is a wasteful number, since it uses less digits than its factorization.

216136436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30983 (or 30981 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 216136436 is about 14701.5793709383. The cubic root of 216136436 is about 600.1263030403.

The spelling of 216136436 in words is "two hundred sixteen million, one hundred thirty-six thousand, four hundred thirty-six".