16535244 has 72 divisors (see below), whose sum is σ = 44549568. Its totient is φ = 4733280.

The previous prime is 16535219. The next prime is 16535257. The reversal of 16535244 is 44253561.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47479 + ... + 47825.

It is an arithmetic number, because the mean of its divisors is an integer number (618744).

Almost surely, 2^16535244 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 16535244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22274784).

16535244 is an abundant number, since it is smaller than the sum of its proper divisors (28014324).

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

16535244 is a wasteful number, since it uses less digits than its factorization.

16535244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 382 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 16535244 is about 4066.3551246786. The cubic root of 16535244 is about 254.7633020810.

The spelling of 16535244 in words is "sixteen million, five hundred thirty-five thousand, two hundred forty-four".