16923648 has 88 divisors (see below), whose sum is σ = 51617152. Its totient is φ = 4829184.

The previous prime is 16923637. The next prime is 16923649. The reversal of 16923648 is 84632961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16923649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21111 + ... + 21897.

Almost surely, 2^16923648 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 16923648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25808576).

16923648 is an abundant number, since it is smaller than the sum of its proper divisors (34693504).

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

16923648 is an equidigital number, since it uses as much as digits as its factorization.

16923648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 799 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 16923648 is about 4113.8361659162. The cubic root of 16923648 is about 256.7426352588.

It can be divided in two parts, 16923 and 648, that added together give a palindrome (17571).

The spelling of 16923648 in words is "sixteen million, nine hundred twenty-three thousand, six hundred forty-eight".