16216365 has 32 divisors (see below), whose sum is σ = 29289600. Its totient is φ = 7589120.

The previous prime is 16216349. The next prime is 16216393. The reversal of 16216365 is 56361261.

16216365 = 500² + 501² + ... + 557².

It is not a de Polignac number, because 16216365 - 2⁴ = 16216349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3091 + ... + 6479.

It is an arithmetic number, because the mean of its divisors is an integer number (915300).

Almost surely, 2^16216365 is an apocalyptic number.

16216365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16216365 is a deficient number, since it is larger than the sum of its proper divisors (13073235).

16216365 is a wasteful number, since it uses less digits than its factorization.

16216365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437.

The product of its digits is 6480, while the sum is 30.

The square root of 16216365 is about 4026.9548048122. The cubic root of 16216365 is about 253.1149732349.

Subtracting 16216365 from its reverse (56361261), we obtain a square (40144896 = 6336²).

The spelling of 16216365 in words is "sixteen million, two hundred sixteen thousand, three hundred sixty-five".