216190 has 16 divisors (see below), whose sum is σ = 419328. Its totient is φ = 79776.

The previous prime is 216179. The next prime is 216211. The reversal of 216190 is 91612.

216190 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216190² = 93476232200, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

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, 702 + ... + 961.

It is an arithmetic number, because the mean of its divisors is an integer number (26208).

2²¹⁶¹⁹⁰ is an apocalyptic number.

216190 is a deficient number, since it is larger than the sum of its proper divisors (203138).

216190 is a wasteful number, since it uses less digits than its factorization.

216190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 216190 is about 464.9623640683. The cubic root of 216190 is about 60.0175874368.

It can be divided in two parts, 216 and 190, that added together give a triangular number (406 = T₂₈).

The spelling of 216190 in words is "two hundred sixteen thousand, one hundred ninety".