216011850 has 24 divisors (see below), whose sum is σ = 535709760. Its totient is φ = 57603120.

The previous prime is 216011839. The next prime is 216011863. The reversal of 216011850 is 58110612.

It is a super-2 number, since 2×216011850² = 93322238680845000, 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 216011850.

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, 719890 + ... + 720189.

It is an arithmetic number, because the mean of its divisors is an integer number (22321240).

Almost surely, 2^216011850 is an apocalyptic number.

216011850 is an abundant number, since it is smaller than the sum of its proper divisors (319697910).

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

216011850 is a wasteful number, since it uses less digits than its factorization.

216011850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440094 (or 1440089 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 216011850 is about 14697.3415963568. The cubic root of 216011850 is about 600.0109720216.

The spelling of 216011850 in words is "two hundred sixteen million, eleven thousand, eight hundred fifty".