16523648 has 32 divisors (see below), whose sum is σ = 33158160. Its totient is φ = 8201728.

The previous prime is 16523641. The next prime is 16523657. The reversal of 16523648 is 84632561.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16523641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20990 + ... + 21762.

Almost surely, 2^16523648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16523648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16579080).

16523648 is an abundant number, since it is smaller than the sum of its proper divisors (16634512).

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

16523648 is an equidigital number, since it uses as much as digits as its factorization.

16523648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 942 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 16523648 is about 4064.9290276707. The cubic root of 16523648 is about 254.7037338417.

It can be divided in two parts, 16523 and 648, that added together give a palindrome (17171).

The spelling of 16523648 in words is "sixteen million, five hundred twenty-three thousand, six hundred forty-eight".