16216736 has 12 divisors (see below), whose sum is σ = 31926762. Its totient is φ = 8108352.

The previous prime is 16216723. The next prime is 16216741. The reversal of 16216736 is 63761261.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 3400336 = 3580^2 + 1844^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 506773 = 16216736 / (1 + 6 + 2 + 1 + 6 + 7 + 3 + 6).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 253355 + ... + 253418.

Almost surely, 2^16216736 is an apocalyptic number.

16216736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16216736 is a deficient number, since it is larger than the sum of its proper divisors (15710026).

16216736 is an equidigital number, since it uses as much as digits as its factorization.

16216736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506783 (or 506775 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 16216736 is about 4027.0008691333. Note that the first 3 decimals coincide. The cubic root of 16216736 is about 253.1169034854.

Adding to 16216736 its reverse (63761261), we get a palindrome (79977997).

The spelling of 16216736 in words is "sixteen million, two hundred sixteen thousand, seven hundred thirty-six".