211268729 has 8 divisors (see below), whose sum is σ = 242715648. Its totient is φ = 180138240.

The previous prime is 211268723. The next prime is 211268737. The reversal of 211268729 is 927862112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211268729 - 2²⁴ = 194491513 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211268692 and 211268701.

It is not an unprimeable number, because it can be changed into a prime (211268723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77672 + ... + 80345.

It is an arithmetic number, because the mean of its divisors is an integer number (30339456).

Almost surely, 2^211268729 is an apocalyptic number.

It is an amenable number.

211268729 is a deficient number, since it is larger than the sum of its proper divisors (31446919).

211268729 is a wasteful number, since it uses less digits than its factorization.

211268729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158215.

The product of its digits is 24192, while the sum is 38.

The square root of 211268729 is about 14535.0861366557. The cubic root of 211268729 is about 595.5868127342.

The spelling of 211268729 in words is "two hundred eleven million, two hundred sixty-eight thousand, seven hundred twenty-nine".