216146 has 8 divisors (see below), whose sum is σ = 370560. Its totient is φ = 92628.

The previous prime is 216133. The next prime is 216149. The reversal of 216146 is 641612.

216146 = T₂₄₅ + T₂₄₆ + ... + T₂₅₁.

It is a happy number.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (216149) 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, 7706 + ... + 7733.

It is an arithmetic number, because the mean of its divisors is an integer number (46320).

2²¹⁶¹⁴⁶ is an apocalyptic number.

216146 is a deficient number, since it is larger than the sum of its proper divisors (154414).

216146 is a wasteful number, since it uses less digits than its factorization.

216146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15448.

The product of its digits is 288, while the sum is 20.

The square root of 216146 is about 464.9150460030. The cubic root of 216146 is about 60.0135154738.

Adding to 216146 its reverse (641612), we get a palindrome (857758).

The spelling of 216146 in words is "two hundred sixteen thousand, one hundred forty-six".