16505368 has 72 divisors (see below), whose sum is σ = 36747900. Its totient is φ = 6941440.

The previous prime is 16505347. The next prime is 16505371. The reversal of 16505368 is 86350561.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 279723 + ... + 279781.

Almost surely, 2^16505368 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 16505368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18373950).

16505368 is an abundant number, since it is smaller than the sum of its proper divisors (20242532).

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

16505368 is a wasteful number, since it uses less digits than its factorization.

16505368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 16505368 is about 4062.6799037089. The cubic root of 16505368 is about 254.6097735114.

The spelling of 16505368 in words is "sixteen million, five hundred five thousand, three hundred sixty-eight".