215270 has 32 divisors (see below), whose sum is σ = 449280. Its totient is φ = 73440.

The previous prime is 215261. The next prime is 215273. The reversal of 215270 is 72512.

215270 = T₃₄ + T₃₅ + ... + T₁₀₉.

215270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215273) by changing a digit.

215270 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2039 + ... + 2141.

It is an arithmetic number, because the mean of its divisors is an integer number (14040).

2²¹⁵²⁷⁰ is an apocalyptic number.

215270 is an abundant number, since it is smaller than the sum of its proper divisors (234010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215270 is a wasteful number, since it uses less digits than its factorization.

215270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 215270 is about 463.9719819127. The cubic root of 215270 is about 59.9323311181.

Adding to 215270 its reverse (72512), we get a palindrome (287782).

It can be divided in two parts, 2152 and 70, that added together give a palindrome (2222).

The spelling of 215270 in words is "two hundred fifteen thousand, two hundred seventy".