211252992 has 72 divisors (see below), whose sum is σ = 576040080. Its totient is φ = 68689920.

The previous prime is 211252973. The next prime is 211253057. The reversal of 211252992 is 299252112.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28134 + ... + 34842.

Almost surely, 2^211252992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211252992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288020040).

211252992 is an abundant number, since it is smaller than the sum of its proper divisors (364787088).

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

211252992 is an equidigital number, since it uses as much as digits as its factorization.

211252992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6769 (or 6755 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 211252992 is about 14534.5447813132. The cubic root of 211252992 is about 595.5720243295.

The spelling of 211252992 in words is "two hundred eleven million, two hundred fifty-two thousand, nine hundred ninety-two".