216869450 has 48 divisors (see below), whose sum is σ = 462988224. Its totient is φ = 74035200.

The previous prime is 216869441. The next prime is 216869467. The reversal of 216869450 is 54968612.

It is a happy number.

216869450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 216869398 and 216869407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88745 + ... + 91155.

It is an arithmetic number, because the mean of its divisors is an integer number (9645588).

Almost surely, 2^216869450 is an apocalyptic number.

216869450 is an abundant number, since it is smaller than the sum of its proper divisors (246118774).

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

216869450 is a wasteful number, since it uses less digits than its factorization.

216869450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687 (or 2682 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 216869450 is about 14726.4880402627. The cubic root of 216869450 is about 600.8039685394.

The spelling of 216869450 in words is "two hundred sixteen million, eight hundred sixty-nine thousand, four hundred fifty".