211089834 has 32 divisors (see below), whose sum is σ = 471493440. Its totient is φ = 70002576.

The previous prime is 211089803. The next prime is 211089839. The reversal of 211089834 is 438980112.

It is not an unprimeable number, because it can be changed into a prime (211089839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717 + ... + 20559.

It is an arithmetic number, because the mean of its divisors is an integer number (14734170).

Almost surely, 2^211089834 is an apocalyptic number.

211089834 is an abundant number, since it is smaller than the sum of its proper divisors (260403606).

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

211089834 is a wasteful number, since it uses less digits than its factorization.

211089834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20051 (or 20045 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 211089834 is about 14528.9309310768. The cubic root of 211089834 is about 595.4186578742.

The spelling of 211089834 in words is "two hundred eleven million, eighty-nine thousand, eight hundred thirty-four".