16003212 has 12 divisors (see below), whose sum is σ = 37340856. Its totient is φ = 5334400.

The previous prime is 16003159. The next prime is 16003217. The reversal of 16003212 is 21230061.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×16003212² = 512205588633888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16003191 and 16003200.

It is not an unprimeable number, because it can be changed into a prime (16003217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666789 + ... + 666812.

It is an arithmetic number, because the mean of its divisors is an integer number (3111738).

Almost surely, 2^16003212 is an apocalyptic number.

16003212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16003212 is an abundant number, since it is smaller than the sum of its proper divisors (21337644).

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

16003212 is a wasteful number, since it uses less digits than its factorization.

16003212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333608 (or 1333606 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 16003212 is about 4000.4014798517. The cubic root of 16003212 is about 252.0010707941.

Adding to 16003212 its reverse (21230061), we get a palindrome (37233273).

The spelling of 16003212 in words is "sixteen million, three thousand, two hundred twelve".