16281612 has 36 divisors (see below), whose sum is σ = 41659800. Its totient is φ = 5360832.

The previous prime is 16281611. The next prime is 16281623. The reversal of 16281612 is 21618261.

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

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (16281611) 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, 264 + ... + 5712.

Almost surely, 2^16281612 is an apocalyptic number.

16281612 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 16281612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20829900).

16281612 is an abundant number, since it is smaller than the sum of its proper divisors (25378188).

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

16281612 is a wasteful number, since it uses less digits than its factorization.

16281612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5542 (or 5537 counting only the distinct ones).

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

The square root of 16281612 is about 4035.0479551054. The cubic root of 16281612 is about 253.4539906930.

Adding to 16281612 its reverse (21618261), we get a palindrome (37899873).

It can be divided in two parts, 1628 and 1612, that added together give a triangular number (3240 = T₈₀).

The spelling of 16281612 in words is "sixteen million, two hundred eighty-one thousand, six hundred twelve".