16151616 has 112 divisors (see below), whose sum is σ = 51206400. Its totient is φ = 4962816.

The previous prime is 16151609. The next prime is 16151621. The reversal of 16151616 is 61615161.

It is a super-2 number, since 2×16151616² = 521749398822912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 16151616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22105 + ... + 22823.

It is an arithmetic number, because the mean of its divisors is an integer number (457200).

Almost surely, 2^16151616 is an apocalyptic number.

16151616 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 16151616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25603200).

16151616 is an abundant number, since it is smaller than the sum of its proper divisors (35054784).

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

16151616 is a wasteful number, since it uses less digits than its factorization.

16151616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753 (or 737 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 16151616 is about 4018.9073141838. The cubic root of 16151616 is about 252.7776431652. Note that the first 3 decimals are identical.

Adding to 16151616 its reverse (61615161), we get a palindrome (77766777).

The spelling of 16151616 in words is "sixteen million, one hundred fifty-one thousand, six hundred sixteen".