211992896 has 14 divisors (see below), whose sum is σ = 420673530. Its totient is φ = 105996416.

The previous prime is 211992887. The next prime is 211992923. The reversal of 211992896 is 698299112.

It can be written as a sum of positive squares in only one way, i.e., 172554496 + 39438400 = 13136^2 + 6280^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211992896.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1656131 + ... + 1656258.

Almost surely, 2^211992896 is an apocalyptic number.

It is an amenable number.

211992896 is a deficient number, since it is larger than the sum of its proper divisors (208680634).

211992896 is an equidigital number, since it uses as much as digits as its factorization.

211992896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312401 (or 3312391 counting only the distinct ones).

The product of its digits is 139968, while the sum is 47.

The square root of 211992896 is about 14559.9758241558. The cubic root of 211992896 is about 596.2665354409.

The spelling of 211992896 in words is "two hundred eleven million, nine hundred ninety-two thousand, eight hundred ninety-six".