16618212 has 36 divisors (see below), whose sum is σ = 45239740. Its totient is φ = 5113152.

The previous prime is 16618187. The next prime is 16618219. The reversal of 16618212 is 21281661.

It can be written as a sum of positive squares in 2 ways, for example, as 2056356 + 14561856 = 1434^2 + 3816^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16618219) 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, 17287 + ... + 18222.

Almost surely, 2^16618212 is an apocalyptic number.

16618212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16618212 is an abundant number, since it is smaller than the sum of its proper divisors (28621528).

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

16618212 is a wasteful number, since it uses less digits than its factorization.

16618212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35532 (or 35527 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 16618212 is about 4076.5441246232. The cubic root of 16618212 is about 255.1886953978.

Adding to 16618212 its reverse (21281661), we get a palindrome (37899873).

The spelling of 16618212 in words is "sixteen million, six hundred eighteen thousand, two hundred twelve".