16163216 has 10 divisors (see below), whose sum is σ = 31316262. Its totient is φ = 8081600.

The previous prime is 16163197. The next prime is 16163219. The reversal of 16163216 is 61236161.

It can be written as a sum of positive squares in only one way, i.e., 16000000 + 163216 = 4000^2 + 404^2 .

It is a super-2 number, since 2×16163216² = 522499102925312, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (16163219) by changing a digit.

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 as a sum of consecutive naturals, namely, 505085 + ... + 505116.

Almost surely, 2^16163216 is an apocalyptic number.

16163216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16163216 is a deficient number, since it is larger than the sum of its proper divisors (15153046).

16163216 is a wasteful number, since it uses less digits than its factorization.

16163216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010209 (or 1010203 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 16163216 is about 4020.3502334996. The cubic root of 16163216 is about 252.8381431790.

Adding to 16163216 its reverse (61236161), we get a palindrome (77399377).

It can be divided in two parts, 16 and 163216, that multiplied together give a square (2611456 = 1616²).

The spelling of 16163216 in words is "sixteen million, one hundred sixty-three thousand, two hundred sixteen".