211072904 has 32 divisors (see below), whose sum is σ = 467899200. Its totient is φ = 87339840.

The previous prime is 211072891. The next prime is 211072907. The reversal of 211072904 is 409270112.

It is not an unprimeable number, because it can be changed into a prime (211072907) 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 7 ways as a sum of consecutive naturals, for example, 63362 + ... + 66609.

It is an arithmetic number, because the mean of its divisors is an integer number (14621850).

Almost surely, 2^211072904 is an apocalyptic number.

It is an amenable number.

211072904 is an abundant number, since it is smaller than the sum of its proper divisors (256826296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211072904 is a wasteful number, since it uses less digits than its factorization.

211072904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130013 (or 130009 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 211072904 is about 14528.3482887767. The cubic root of 211072904 is about 595.4027393635.

The spelling of 211072904 in words is "two hundred eleven million, seventy-two thousand, nine hundred four".