16223012 has 12 divisors (see below), whose sum is σ = 30574236. Its totient is φ = 7487520.

The previous prime is 16222991. The next prime is 16223021. The reversal of 16223012 is 21032261.

It can be written as a sum of positive squares in 2 ways, for example, as 4553956 + 11669056 = 2134^2 + 3416^2 .

It is a super-2 number, since 2×16223012² = 526372236704288, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 155939 + ... + 156042.

It is an arithmetic number, because the mean of its divisors is an integer number (2547853).

Almost surely, 2^16223012 is an apocalyptic number.

It is an amenable number.

16223012 is a deficient number, since it is larger than the sum of its proper divisors (14351224).

16223012 is a wasteful number, since it uses less digits than its factorization.

16223012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311998 (or 311996 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 16223012 is about 4027.7800337158. The cubic root of 16223012 is about 253.1495519954.

Adding to 16223012 its reverse (21032261), we get a palindrome (37255273).

Subtracting 16223012 from its reverse (21032261), we obtain a square (4809249 = 2193²).

The spelling of 16223012 in words is "sixteen million, two hundred twenty-three thousand, twelve".