216260550 has 96 divisors (see below), whose sum is σ = 650136960. Its totient is φ = 52423200.

The previous prime is 216260549. The next prime is 216260563. The reversal of 216260550 is 55062612.

216260550 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 605 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7569 + ... + 22131.

It is an arithmetic number, because the mean of its divisors is an integer number (6772260).

Almost surely, 2^216260550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216260550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325068480).

216260550 is an abundant number, since it is smaller than the sum of its proper divisors (433876410).

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

216260550 is a wasteful number, since it uses less digits than its factorization.

216260550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14595 (or 14584 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 216260550 is about 14705.7998762393. The cubic root of 216260550 is about 600.2411530623.

The spelling of 216260550 in words is "two hundred sixteen million, two hundred sixty thousand, five hundred fifty".