205211432 has 32 divisors (see below), whose sum is σ = 390187200. Its totient is φ = 101170944.

The previous prime is 205211431. The next prime is 205211449. The reversal of 205211432 is 234112502.

It is a super-2 number, since 2×205211432² = 84223463646981248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205211431) 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, 277319 + ... + 278057.

It is an arithmetic number, because the mean of its divisors is an integer number (12193350).

Almost surely, 2^205211432 is an apocalyptic number.

It is an amenable number.

205211432 is a deficient number, since it is larger than the sum of its proper divisors (184975768).

205211432 is a wasteful number, since it uses less digits than its factorization.

205211432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 205211432 is about 14325.2026861752. The cubic root of 205211432 is about 589.8394967027.

Adding to 205211432 its reverse (234112502), we get a palindrome (439323934).

The spelling of 205211432 in words is "two hundred five million, two hundred eleven thousand, four hundred thirty-two".