16071616 has 56 divisors (see below), whose sum is σ = 35789616. Its totient is φ = 7096320.

The previous prime is 16071599. The next prime is 16071623. The reversal of 16071616 is 61617061.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a pancake number, because a pancake can be divided into 16071616 parts by 5669 straight cuts.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25740 + ... + 26356.

Almost surely, 2^16071616 is an apocalyptic number.

16071616 is a gapful number since it is divisible by the number (16) 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 16071616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17894808).

16071616 is an abundant number, since it is smaller than the sum of its proper divisors (19718000).

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

16071616 is a wasteful number, since it uses less digits than its factorization.

16071616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 16071616 is about 4008.9420050682. The cubic root of 16071616 is about 252.3596108780.

Adding to 16071616 its reverse (61617061), we get a palindrome (77688677).

It can be divided in two parts, 1607 and 1616, that added together give a palindrome (3223).

The spelling of 16071616 in words is "sixteen million, seventy-one thousand, six hundred sixteen".