16204416 has 64 divisors (see below), whose sum is σ = 45328800. Its totient is φ = 5114880.

The previous prime is 16204411. The next prime is 16204423. The reversal of 16204416 is 61440261.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (16204411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6186 + ... + 8406.

Almost surely, 2^16204416 is an apocalyptic number.

16204416 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 16204416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22664400).

16204416 is an abundant number, since it is smaller than the sum of its proper divisors (29124384).

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

16204416 is a wasteful number, since it uses less digits than its factorization.

16204416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257 (or 2245 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 16204416 is about 4025.4709041303. The cubic root of 16204416 is about 253.0527888514.

Adding to 16204416 its reverse (61440261), we get a palindrome (77644677).

The spelling of 16204416 in words is "sixteen million, two hundred four thousand, four hundred sixteen".