215027216 has 10 divisors (see below), whose sum is σ = 416615262. Its totient is φ = 107513600.

The previous prime is 215027213. The next prime is 215027221. The reversal of 215027216 is 612720512.

It can be written as a sum of positive squares in only one way, i.e., 166306816 + 48720400 = 12896^2 + 6980^2 .

It is not an unprimeable number, because it can be changed into a prime (215027213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6719585 + ... + 6719616.

Almost surely, 2^215027216 is an apocalyptic number.

It is an amenable number.

215027216 is a deficient number, since it is larger than the sum of its proper divisors (201588046).

215027216 is a wasteful number, since it uses less digits than its factorization.

215027216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13439209 (or 13439203 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 215027216 is about 14663.8063271444. The cubic root of 215027216 is about 599.0979185021.

Adding to 215027216 its reverse (612720512), we get a palindrome (827747728).

The spelling of 215027216 in words is "two hundred fifteen million, twenty-seven thousand, two hundred sixteen".