211485830 has 32 divisors (see below), whose sum is σ = 385021728. Its totient is φ = 83635200.

The previous prime is 211485829. The next prime is 211485863. The reversal of 211485830 is 38584112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598934 + ... + 599286.

It is an arithmetic number, because the mean of its divisors is an integer number (12031929).

Almost surely, 2^211485830 is an apocalyptic number.

211485830 is a deficient number, since it is larger than the sum of its proper divisors (173535898).

211485830 is a wasteful number, since it uses less digits than its factorization.

211485830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 211485830 is about 14542.5523894535. The cubic root of 211485830 is about 595.7907524083.

The spelling of 211485830 in words is "two hundred eleven million, four hundred eighty-five thousand, eight hundred thirty".