216597150 has 432 divisors, whose sum is σ = 793877760. Its totient is φ = 41731200.

The previous prime is 216597133. The next prime is 216597191. The reversal of 216597150 is 51795612.

216597150 is a `hidden beast` number, since 2 + 16 + 597 + 1 + 50 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 4608427 + ... + 4608473.

It is an arithmetic number, because the mean of its divisors is an integer number (1837680).

Almost surely, 2^216597150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216597150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396938880).

216597150 is an abundant number, since it is smaller than the sum of its proper divisors (577280610).

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

216597150 is a wasteful number, since it uses less digits than its factorization.

216597150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 216597150 is about 14717.2398906860. The cubic root of 216597150 is about 600.5524079197.

The spelling of 216597150 in words is "two hundred sixteen million, five hundred ninety-seven thousand, one hundred fifty".