216352250 has 16 divisors (see below), whose sum is σ = 405011880. Its totient is φ = 86540800.

The previous prime is 216352231. The next prime is 216352273. The reversal of 216352250 is 52253612.

216352250 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 131767441 + 84584809 = 11479^2 + 9197^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432455 + ... + 432954.

Almost surely, 2^216352250 is an apocalyptic number.

216352250 is a deficient number, since it is larger than the sum of its proper divisors (188659630).

216352250 is an equidigital number, since it uses as much as digits as its factorization.

216352250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865426 (or 865416 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 216352250 is about 14708.9173632868. The cubic root of 216352250 is about 600.3259802701.

The spelling of 216352250 in words is "two hundred sixteen million, three hundred fifty-two thousand, two hundred fifty".