16553936 has 40 divisors (see below), whose sum is σ = 37271424. Its totient is φ = 6975360.

The previous prime is 16553893. The next prime is 16553941. The reversal of 16553936 is 63935561.

It is a self number, because there is not a number n which added to its sum of digits gives 16553936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5621 + ... + 8043.

Almost surely, 2^16553936 is an apocalyptic number.

16553936 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 16553936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18635712).

16553936 is an abundant number, since it is smaller than the sum of its proper divisors (20717488).

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

16553936 is a wasteful number, since it uses less digits than its factorization.

16553936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499 (or 2493 counting only the distinct ones).

The product of its digits is 72900, while the sum is 38.

The square root of 16553936 is about 4068.6528483025. The cubic root of 16553936 is about 254.8592636198.

The spelling of 16553936 in words is "sixteen million, five hundred fifty-three thousand, nine hundred thirty-six".