16109568 has 156 divisors (see below), whose sum is σ = 51111840. Its totient is φ = 4866048.

The previous prime is 16109521. The next prime is 16109573. The reversal of 16109568 is 86590161.

It is a super-2 number, since 2×16109568² = 519036362293248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 700405 + ... + 700427.

It is an arithmetic number, because the mean of its divisors is an integer number (327640).

Almost surely, 2^16109568 is an apocalyptic number.

16109568 is a gapful number since it is divisible by the number (18) 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 16109568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25555920).

16109568 is an abundant number, since it is smaller than the sum of its proper divisors (35002272).

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

16109568 is a wasteful number, since it uses less digits than its factorization.

16109568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 16109568 is about 4013.6726323904. The cubic root of 16109568 is about 252.5580979275.

The spelling of 16109568 in words is "sixteen million, one hundred nine thousand, five hundred sixty-eight".