16003398 has 16 divisors (see below), whose sum is σ = 32125680. Its totient is φ = 5314656.

The previous prime is 16003391. The next prime is 16003441. The reversal of 16003398 is 89330061.

It is a super-2 number, since 2×16003398² = 512217495092808, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16003391) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3153 + ... + 6476.

It is an arithmetic number, because the mean of its divisors is an integer number (2007855).

Almost surely, 2^16003398 is an apocalyptic number.

16003398 is an abundant number, since it is smaller than the sum of its proper divisors (16122282).

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

16003398 is a wasteful number, since it uses less digits than its factorization.

16003398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9911.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 16003398 is about 4000.4247274508. The cubic root of 16003398 is about 252.0020470985.

The spelling of 16003398 in words is "sixteen million, three thousand, three hundred ninety-eight".