216705050 has 24 divisors (see below), whose sum is σ = 403890816. Its totient is φ = 86505840.

The previous prime is 216705007. The next prime is 216705061. The reversal of 216705050 is 50507612.

It is a super-2 number, since 2×216705050² = 93922157391005000, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

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 11 ways as a sum of consecutive naturals, for example, 22007 + ... + 30293.

It is an arithmetic number, because the mean of its divisors is an integer number (16828784).

Almost surely, 2^216705050 is an apocalyptic number.

216705050 is a deficient number, since it is larger than the sum of its proper divisors (187185766).

216705050 is a wasteful number, since it uses less digits than its factorization.

216705050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8822 (or 8817 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 216705050 is about 14720.9052031456. The cubic root of 216705050 is about 600.6521150605.

The spelling of 216705050 in words is "two hundred sixteen million, seven hundred five thousand, fifty".