216503036 has 12 divisors (see below), whose sum is σ = 380290680. Its totient is φ = 107848560.

The previous prime is 216503033. The next prime is 216503047. The reversal of 216503036 is 630305612.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 216502996 and 216503014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216503033) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 99530 + ... + 101681.

It is an arithmetic number, because the mean of its divisors is an integer number (31690890).

Almost surely, 2^216503036 is an apocalyptic number.

It is an amenable number.

216503036 is a deficient number, since it is larger than the sum of its proper divisors (163787644).

216503036 is a wasteful number, since it uses less digits than its factorization.

216503036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201484 (or 201482 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 216503036 is about 14714.0421366802. The cubic root of 216503036 is about 600.4654129653.

Adding to 216503036 its reverse (630305612), we get a palindrome (846808648).

The spelling of 216503036 in words is "two hundred sixteen million, five hundred three thousand, thirty-six".