245216 has 24 divisors (see below), whose sum is σ = 493920. Its totient is φ = 119808.

The previous prime is 245209. The next prime is 245251. The reversal of 245216 is 612542.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

245216 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 2480 + ... + 2576.

It is an arithmetic number, because the mean of its divisors is an integer number (20580).

2²⁴⁵²¹⁶ is an apocalyptic number.

It is an amenable number.

245216 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

245216 is an equidigital number, since it uses as much as digits as its factorization.

245216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 178 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 245216 is about 495.1928917099. The cubic root of 245216 is about 62.5916309281.

Adding to 245216 its reverse (612542), we get a palindrome (857758).

The spelling of 245216 in words is "two hundred forty-five thousand, two hundred sixteen".