16224012 has 36 divisors (see below), whose sum is σ = 46870096. Its totient is φ = 4635360.

The previous prime is 16223959. The next prime is 16224017. The reversal of 16224012 is 21042261.

16224012 is a `hidden beast` number, since 1 + 622 + 40 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×16224012² = 526437130752288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16224017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31939 + ... + 32442.

Almost surely, 2^16224012 is an apocalyptic number.

16224012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16224012 is an abundant number, since it is smaller than the sum of its proper divisors (30646084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16224012 is a wasteful number, since it uses less digits than its factorization.

16224012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64398 (or 64393 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 16224012 is about 4027.9041696644. The cubic root of 16224012 is about 253.1547533384.

Adding to 16224012 its reverse (21042261), we get a palindrome (37266273).

The spelling of 16224012 in words is "sixteen million, two hundred twenty-four thousand, twelve".