211434064 has 20 divisors (see below), whose sum is σ = 411922420. Its totient is φ = 105131520.

The previous prime is 211434037. The next prime is 211434077. The reversal of 211434064 is 460434112.

It can be written as a sum of positive squares in 2 ways, for example, as 15210000 + 196224064 = 3900^2 + 14008^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33609 + ... + 39400.

It is an arithmetic number, because the mean of its divisors is an integer number (20596121).

Almost surely, 2^211434064 is an apocalyptic number.

It is an amenable number.

211434064 is a deficient number, since it is larger than the sum of its proper divisors (200488356).

211434064 is a wasteful number, since it uses less digits than its factorization.

211434064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73198 (or 73192 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 211434064 is about 14540.7724691641. The cubic root of 211434064 is about 595.7421372980.

Adding to 211434064 its reverse (460434112), we get a palindrome (671868176).

The spelling of 211434064 in words is "two hundred eleven million, four hundred thirty-four thousand, sixty-four".