211532816 has 40 divisors (see below), whose sum is σ = 448093344. Its totient is φ = 95938560.

The previous prime is 211532807. The next prime is 211532837. The reversal of 211532816 is 618235112.

It is a super-2 number, since 2×211532816² = 89492264489779712, which contains 22 as substring.

It is an unprimeable number.

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, 100511 + ... + 102593.

Almost surely, 2^211532816 is an apocalyptic number.

It is an amenable number.

211532816 is an abundant number, since it is smaller than the sum of its proper divisors (236560528).

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

211532816 is a wasteful number, since it uses less digits than its factorization.

211532816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679 (or 2673 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 211532816 is about 14544.1677658091. The cubic root of 211532816 is about 595.8348715996.

Adding to 211532816 its reverse (618235112), we get a palindrome (829767928).

The spelling of 211532816 in words is "two hundred eleven million, five hundred thirty-two thousand, eight hundred sixteen".