216550230 has 32 divisors (see below), whose sum is σ = 559700064. Its totient is φ = 53304576.

The previous prime is 216550211. The next prime is 216550241. The reversal of 216550230 is 32055612.

216550230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216550230² = 93788004226105800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216550230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277239 + ... + 278018.

It is an arithmetic number, because the mean of its divisors is an integer number (17490627).

Almost surely, 2^216550230 is an apocalyptic number.

216550230 is an abundant number, since it is smaller than the sum of its proper divisors (343149834).

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

216550230 is a wasteful number, since it uses less digits than its factorization.

216550230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555280.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 216550230 is about 14715.6457554536. The cubic root of 216550230 is about 600.5090402302.

The spelling of 216550230 in words is "two hundred sixteen million, five hundred fifty thousand, two hundred thirty".