16390 has 16 divisors (see below), whose sum is σ = 32400. Its totient is φ = 5920.

The previous prime is 16381. The next prime is 16411. The reversal of 16390 is 9361.

16390 = T₄₉ + T₅₀ + ... + T₅₉.

16390 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

16390 is strictly pandigital in base 6.

It is a nialpdrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36 + ... + 184.

It is an arithmetic number, because the mean of its divisors is an integer number (2025).

2¹⁶³⁹⁰ is an apocalyptic number.

16390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16390 is a deficient number, since it is larger than the sum of its proper divisors (16010).

16390 is a wasteful number, since it uses less digits than its factorization.

16390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 16390 is about 128.0234353546. The cubic root of 16390 is about 25.4015168458.

It can be divided in two parts, 163 and 90, that added together give a triangular number (253 = T₂₂).

The spelling of 16390 in words is "sixteen thousand, three hundred ninety".