16003641 has 8 divisors (see below), whose sum is σ = 21792384. Its totient is φ = 10442000.

The previous prime is 16003639. The next prime is 16003649. The reversal of 16003641 is 14630061.

16003641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16003641 - 2¹ = 16003639 is a prime.

It is a super-2 number, since 2×16003641² = 512233050513762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16003649) 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, 56610 + ... + 56891.

It is an arithmetic number, because the mean of its divisors is an integer number (2724048).

Almost surely, 2^16003641 is an apocalyptic number.

It is an amenable number.

16003641 is a deficient number, since it is larger than the sum of its proper divisors (5788743).

16003641 is a wasteful number, since it uses less digits than its factorization.

16003641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113551.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 16003641 is about 4000.4550991106. The cubic root of 16003641 is about 252.0033225815.

The spelling of 16003641 in words is "sixteen million, three thousand, six hundred forty-one".