16004406 has 16 divisors (see below), whose sum is σ = 34918848. Its totient is φ = 4849800.

The previous prime is 16004383. The next prime is 16004411. The reversal of 16004406 is 60440061.

It is a super-2 number, since 2×16004406² = 512282022825672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121180 + ... + 121311.

It is an arithmetic number, because the mean of its divisors is an integer number (2182428).

Almost surely, 2^16004406 is an apocalyptic number.

16004406 is an abundant number, since it is smaller than the sum of its proper divisors (18914442).

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

16004406 is a wasteful number, since it uses less digits than its factorization.

16004406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242507.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 16004406 is about 4000.5507120895. The cubic root of 16004406 is about 252.0073379068.

Adding to 16004406 its reverse (60440061), we get a palindrome (76444467).

It can be divided in two parts, 1600 and 4406, that added together give a palindrome (6006).

The spelling of 16004406 in words is "sixteen million, four thousand, four hundred six".