216140736 has 112 divisors (see below), whose sum is σ = 662822144. Its totient is φ = 60880896.

The previous prime is 216140719. The next prime is 216140759. The reversal of 216140736 is 637041612.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97011 + ... + 99213.

Almost surely, 2^216140736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216140736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331411072).

216140736 is an abundant number, since it is smaller than the sum of its proper divisors (446681408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216140736 is a wasteful number, since it uses less digits than its factorization.

216140736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298 (or 2288 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 216140736 is about 14701.7256130020. The cubic root of 216140736 is about 600.1302828197.

The spelling of 216140736 in words is "two hundred sixteen million, one hundred forty thousand, seven hundred thirty-six".