215146 has 8 divisors (see below), whose sum is σ = 326340. Its totient is φ = 106368.

The previous prime is 215143. The next prime is 215153. The reversal of 215146 is 641512.

It can be written as a sum of positive squares in 2 ways, for example, as 189225 + 25921 = 435^2 + 161^2 .

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

It is not an unprimeable number, because it can be changed into a prime (215141) 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, 361 + ... + 748.

2²¹⁵¹⁴⁶ is an apocalyptic number.

215146 is a deficient number, since it is larger than the sum of its proper divisors (111194).

215146 is a wasteful number, since it uses less digits than its factorization.

215146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208.

The product of its digits is 240, while the sum is 19.

The square root of 215146 is about 463.8383339053. The cubic root of 215146 is about 59.9208214846.

Adding to 215146 its reverse (641512), we get a palindrome (856658).

It can be divided in two parts, 2151 and 46, that added together give a cube (2197 = 13³).

The spelling of 215146 in words is "two hundred fifteen thousand, one hundred forty-six".