16649360 has 80 divisors (see below), whose sum is σ = 47663616. Its totient is φ = 5266944.

The previous prime is 16649359. The next prime is 16649383. The reversal of 16649360 is 6394661.

16649360 = T₉ + T₁₀ + ... + T₄₆₃.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 16649360.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6137 + ... + 8423.

Almost surely, 2^16649360 is an apocalyptic number.

16649360 is a gapful number since it is divisible by the number (10) 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 16649360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23831808).

16649360 is an abundant number, since it is smaller than the sum of its proper divisors (31014256).

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

16649360 is a wasteful number, since it uses less digits than its factorization.

16649360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320 (or 2314 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 16649360 is about 4080.3627289740. The cubic root of 16649360 is about 255.3480317640.

The spelling of 16649360 in words is "sixteen million, six hundred forty-nine thousand, three hundred sixty".