16611312 has 40 divisors (see below), whose sum is σ = 45439056. Its totient is φ = 5211136.

The previous prime is 16611311. The next prime is 16611341. The reversal of 16611312 is 21311661.

It is a super-2 number, since 2×16611312² = 551871372722688, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16611311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9363 + ... + 10994.

Almost surely, 2^16611312 is an apocalyptic number.

16611312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16611312 is an abundant number, since it is smaller than the sum of its proper divisors (28827744).

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

16611312 is a wasteful number, since it uses less digits than its factorization.

16611312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20385 (or 20379 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 16611312 is about 4075.6977316774. The cubic root of 16611312 is about 255.1533717871.

Adding to 16611312 its reverse (21311661), we get a palindrome (37922973).

The spelling of 16611312 in words is "sixteen million, six hundred eleven thousand, three hundred twelve".