211828894 has 4 divisors (see below), whose sum is σ = 317743344. Its totient is φ = 105914446.

The previous prime is 211828849. The next prime is 211828901. The reversal of 211828894 is 498828112.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 211828894.

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, 52957222 + ... + 52957225.

It is an arithmetic number, because the mean of its divisors is an integer number (79435836).

Almost surely, 2^211828894 is an apocalyptic number.

211828894 is a deficient number, since it is larger than the sum of its proper divisors (105914450).

211828894 is a wasteful number, since it uses less digits than its factorization.

211828894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105914449.

The product of its digits is 73728, while the sum is 43.

The square root of 211828894 is about 14554.3427883227. The cubic root of 211828894 is about 596.1127344815.

The spelling of 211828894 in words is "two hundred eleven million, eight hundred twenty-eight thousand, eight hundred ninety-four".