216503032 has 8 divisors (see below), whose sum is σ = 405943200. Its totient is φ = 108251512.

The previous prime is 216503029. The next prime is 216503033. The reversal of 216503032 is 230305612.

It is a tau number, because it is divible by the number of its divisors (8).

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 = 216502994 and 216503012.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 13531432 + ... + 13531447.

It is an arithmetic number, because the mean of its divisors is an integer number (50742900).

Almost surely, 2^216503032 is an apocalyptic number.

It is an amenable number.

216503032 is a deficient number, since it is larger than the sum of its proper divisors (189440168).

216503032 is a wasteful number, since it uses less digits than its factorization.

216503032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27062885 (or 27062881 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 216503032 is about 14714.0420007556. The cubic root of 216503032 is about 600.4654092674.

Adding to 216503032 its reverse (230305612), we get a palindrome (446808644).

The spelling of 216503032 in words is "two hundred sixteen million, five hundred three thousand, thirty-two".