211838996 has 18 divisors (see below), whose sum is σ = 383069610. Its totient is φ = 102500880.

The previous prime is 211838983. The next prime is 211839013. The reversal of 211838996 is 699838112.

It can be written as a sum of positive squares in only one way, i.e., 203347600 + 8491396 = 14260^2 + 2914^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211838996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23711 + ... + 31398.

It is an arithmetic number, because the mean of its divisors is an integer number (21281645).

Almost surely, 2^211838996 is an apocalyptic number.

It is an amenable number.

211838996 is a deficient number, since it is larger than the sum of its proper divisors (171230614).

211838996 is a wasteful number, since it uses less digits than its factorization.

211838996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55175 (or 55142 counting only the distinct ones).

The product of its digits is 186624, while the sum is 47.

The square root of 211838996 is about 14554.6898283680. The cubic root of 211838996 is about 596.1222104238.

It can be divided in two parts, 2118 and 38996, that added together give a palindrome (41114).

The spelling of 211838996 in words is "two hundred eleven million, eight hundred thirty-eight thousand, nine hundred ninety-six".