16890535 has 4 divisors (see below), whose sum is σ = 20268648. Its totient is φ = 13512424.

The previous prime is 16890527. The next prime is 16890539. The reversal of 16890535 is 53509861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53509861 = 2239 ⋅23899.

It is a cyclic number.

It is not a de Polignac number, because 16890535 - 2³ = 16890527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16890494 and 16890503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16890539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689049 + ... + 1689058.

It is an arithmetic number, because the mean of its divisors is an integer number (5067162).

Almost surely, 2^16890535 is an apocalyptic number.

16890535 is a deficient number, since it is larger than the sum of its proper divisors (3378113).

16890535 is an equidigital number, since it uses as much as digits as its factorization.

16890535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378112.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 16890535 is about 4109.8096062956. The cubic root of 16890535 is about 256.5750774202.

The spelling of 16890535 in words is "sixteen million, eight hundred ninety thousand, five hundred thirty-five".