217040150 has 24 divisors (see below), whose sum is σ = 414608880. Its totient is φ = 84468960.

The previous prime is 217040137. The next prime is 217040189. The reversal of 217040150 is 51040712.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56810 + ... + 60509.

It is an arithmetic number, because the mean of its divisors is an integer number (17275370).

Almost surely, 2^217040150 is an apocalyptic number.

217040150 is a deficient number, since it is larger than the sum of its proper divisors (197568730).

217040150 is a wasteful number, since it uses less digits than its factorization.

217040150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117368 (or 117363 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 217040150 is about 14732.2825794240. The cubic root of 217040150 is about 600.9615600325.

Adding to 217040150 its reverse (51040712), we get a palindrome (268080862).

The spelling of 217040150 in words is "two hundred seventeen million, forty thousand, one hundred fifty".