215218314 has 48 divisors (see below), whose sum is σ = 487940544. Its totient is φ = 68428800.

The previous prime is 215218313. The next prime is 215218321. The reversal of 215218314 is 413812512.

It is not an unprimeable number, because it can be changed into a prime (215218313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264969 + ... + 265779.

It is an arithmetic number, because the mean of its divisors is an integer number (10165428).

Almost surely, 2^215218314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215218314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243970272).

215218314 is an abundant number, since it is smaller than the sum of its proper divisors (272722230).

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

215218314 is a wasteful number, since it uses less digits than its factorization.

215218314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1480 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 215218314 is about 14670.3208553869. The cubic root of 215218314 is about 599.2753418032.

The spelling of 215218314 in words is "two hundred fifteen million, two hundred eighteen thousand, three hundred fourteen".