216186496 has 32 divisors (see below), whose sum is σ = 431362080. Its totient is φ = 107923200.

The previous prime is 216186493. The next prime is 216186517. The reversal of 216186496 is 694681612.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (216186491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133725 + ... + 135331.

It is an arithmetic number, because the mean of its divisors is an integer number (13480065).

Almost surely, 2^216186496 is an apocalyptic number.

It is an amenable number.

216186496 is a deficient number, since it is larger than the sum of its proper divisors (215175584).

216186496 is a wasteful number, since it uses less digits than its factorization.

216186496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2672 (or 2660 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 216186496 is about 14703.2818105347. The cubic root of 216186496 is about 600.1726318071.

The spelling of 216186496 in words is "two hundred sixteen million, one hundred eighty-six thousand, four hundred ninety-six".