16004352 has 144 divisors (see below), whose sum is σ = 52653440. Its totient is φ = 4202496.

The previous prime is 16004347. The next prime is 16004353. The reversal of 16004352 is 25340061.

It is a happy number.

It is a super-2 number, since 2×16004352² = 512278565879808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16004353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69774 + ... + 70002.

Almost surely, 2^16004352 is an apocalyptic number.

16004352 is a gapful number since it is divisible by the number (12) 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 16004352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26326720).

16004352 is an abundant number, since it is smaller than the sum of its proper divisors (36649088).

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

16004352 is a wasteful number, since it uses less digits than its factorization.

16004352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 16004352 is about 4000.5439630130. The cubic root of 16004352 is about 252.0070544762.

The spelling of 16004352 in words is "sixteen million, four thousand, three hundred fifty-two".