211532040 has 64 divisors (see below), whose sum is σ = 705110400. Its totient is φ = 56408256.

The previous prime is 211532039. The next prime is 211532107. The reversal of 211532040 is 40235112.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 15 ways as a sum of consecutive naturals, for example, 96852 + ... + 99011.

It is an arithmetic number, because the mean of its divisors is an integer number (11017350).

Almost surely, 2^211532040 is an apocalyptic number.

211532040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211532040 is an abundant number, since it is smaller than the sum of its proper divisors (493578360).

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

211532040 is a wasteful number, since it uses less digits than its factorization.

211532040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195883 (or 195873 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 211532040 is about 14544.1410884246. The cubic root of 211532040 is about 595.8341429996.

Adding to 211532040 its reverse (40235112), we get a palindrome (251767152).

The spelling of 211532040 in words is "two hundred eleven million, five hundred thirty-two thousand, forty".