16623552 has 112 divisors (see below), whose sum is σ = 50913792. Its totient is φ = 4730880.

The previous prime is 16623539. The next prime is 16623553. The reversal of 16623552 is 25532661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16623553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35673 + ... + 36135.

Almost surely, 2^16623552 is an apocalyptic number.

16623552 is a gapful number since it is divisible by the number (12) 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 16623552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25456896).

16623552 is an abundant number, since it is smaller than the sum of its proper divisors (34290240).

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

16623552 is a wasteful number, since it uses less digits than its factorization.

16623552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 496 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 16623552 is about 4077.1990385558. The cubic root of 16623552 is about 255.2160260897.

The spelling of 16623552 in words is "sixteen million, six hundred twenty-three thousand, five hundred fifty-two".