211493466 has 24 divisors (see below), whose sum is σ = 465750324. Its totient is φ = 69341760.

The previous prime is 211493461. The next prime is 211493489. The reversal of 211493466 is 664394112.

It can be written as a sum of positive squares in 2 ways, for example, as 203490225 + 8003241 = 14265^2 + 2829^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211493466.

It is not an unprimeable number, because it can be changed into a prime (211493461) by changing a digit.

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, 95211 + ... + 97406.

Almost surely, 2^211493466 is an apocalyptic number.

211493466 is an abundant number, since it is smaller than the sum of its proper divisors (254256858).

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

211493466 is a wasteful number, since it uses less digits than its factorization.

211493466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192686 (or 192683 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 211493466 is about 14542.8149269665. The cubic root of 211493466 is about 595.7979229493.

The spelling of 211493466 in words is "two hundred eleven million, four hundred ninety-three thousand, four hundred sixty-six".