215214250 has 32 divisors (see below), whose sum is σ = 404099280. Its totient is φ = 85825600.

The previous prime is 215214239. The next prime is 215214253. The reversal of 215214250 is 52412512.

It can be written as a sum of positive squares in 8 ways, for example, as 31259281 + 183954969 = 5591^2 + 13563^2 .

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (215214253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96144 + ... + 98356.

Almost surely, 2^215214250 is an apocalyptic number.

215214250 is a deficient number, since it is larger than the sum of its proper divisors (188885030).

215214250 is a wasteful number, since it uses less digits than its factorization.

215214250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619 (or 2609 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 215214250 is about 14670.1823437884. The cubic root of 215214250 is about 599.2715697104.

Adding to 215214250 its reverse (52412512), we get a palindrome (267626762).

The spelling of 215214250 in words is "two hundred fifteen million, two hundred fourteen thousand, two hundred fifty".