16642212 has 48 divisors (see below), whose sum is σ = 40061952. Its totient is φ = 5374720.

The previous prime is 16642211. The next prime is 16642217. The reversal of 16642212 is 21224661.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (16642211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87037 + ... + 87227.

It is an arithmetic number, because the mean of its divisors is an integer number (834624).

Almost surely, 2^16642212 is an apocalyptic number.

16642212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16642212 is an abundant number, since it is smaller than the sum of its proper divisors (23419740).

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

16642212 is a wasteful number, since it uses less digits than its factorization.

16642212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 386 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 16642212 is about 4079.4867324211. The cubic root of 16642212 is about 255.3114840329.

Adding to 16642212 its reverse (21224661), we get a palindrome (37866873).

The spelling of 16642212 in words is "sixteen million, six hundred forty-two thousand, two hundred twelve".