16631412 has 48 divisors (see below), whose sum is σ = 44728320. Its totient is φ = 4711392.

The previous prime is 16631401. The next prime is 16631429. The reversal of 16631412 is 21413661.

It is a super-2 number, since 2×16631412² = 553207730227488, 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9889 + ... + 11447.

It is an arithmetic number, because the mean of its divisors is an integer number (931840).

Almost surely, 2^16631412 is an apocalyptic number.

16631412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16631412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22364160).

16631412 is an abundant number, since it is smaller than the sum of its proper divisors (28096908).

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

16631412 is a wasteful number, since it uses less digits than its factorization.

16631412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700 (or 1698 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 16631412 is about 4078.1628216637. The cubic root of 16631412 is about 255.2562437658.

The spelling of 16631412 in words is "sixteen million, six hundred thirty-one thousand, four hundred twelve".