211345772 has 24 divisors (see below), whose sum is σ = 406198800. Its totient is φ = 95418560.

The previous prime is 211345763. The next prime is 211345807. The reversal of 211345772 is 277543112.

211345772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 9563 + ... + 22674.

It is an arithmetic number, because the mean of its divisors is an integer number (16924950).

Almost surely, 2^211345772 is an apocalyptic number.

211345772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211345772 is a deficient number, since it is larger than the sum of its proper divisors (194853028).

211345772 is a wasteful number, since it uses less digits than its factorization.

211345772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32401 (or 32399 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 211345772 is about 14537.7361373771. The cubic root of 211345772 is about 595.6592011380.

Adding to 211345772 its reverse (277543112), we get a palindrome (488888884).

The spelling of 211345772 in words is "two hundred eleven million, three hundred forty-five thousand, seven hundred seventy-two".