211998874 has 32 divisors (see below), whose sum is σ = 350308800. Its totient is φ = 95773440.

The previous prime is 211998847. The next prime is 211998877. The reversal of 211998874 is 478899112.

It is not an unprimeable number, because it can be changed into a prime (211998877) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 207537 + ... + 208555.

It is an arithmetic number, because the mean of its divisors is an integer number (10947150).

Almost surely, 2^211998874 is an apocalyptic number.

211998874 is a deficient number, since it is larger than the sum of its proper divisors (138309926).

211998874 is a wasteful number, since it uses less digits than its factorization.

211998874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278.

The product of its digits is 290304, while the sum is 49.

The square root of 211998874 is about 14560.1811115109. The cubic root of 211998874 is about 596.2721401064.

The spelling of 211998874 in words is "two hundred eleven million, nine hundred ninety-eight thousand, eight hundred seventy-four".