216793504 has 12 divisors (see below), whose sum is σ = 426812274. Its totient is φ = 108396736.

The previous prime is 216793501. The next prime is 216793517. The reversal of 216793504 is 405397612.

It can be written as a sum of positive squares in only one way, i.e., 152473104 + 64320400 = 12348^2 + 8020^2 .

It is not an unprimeable number, because it can be changed into a prime (216793501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3387367 + ... + 3387430.

Almost surely, 2^216793504 is an apocalyptic number.

It is an amenable number.

216793504 is a deficient number, since it is larger than the sum of its proper divisors (210018770).

216793504 is an equidigital number, since it uses as much as digits as its factorization.

216793504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774807 (or 6774799 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 216793504 is about 14723.9092635074. The cubic root of 216793504 is about 600.7338280540.

The spelling of 216793504 in words is "two hundred sixteen million, seven hundred ninety-three thousand, five hundred four".