208643152 has 40 divisors (see below), whose sum is σ = 416866176. Its totient is φ = 101108736.

The previous prime is 208643131. The next prime is 208643153. The reversal of 208643152 is 251346802.

It is a super-3 number, since 3×208643152³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208643153) 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, 79168 + ... + 81760.

Almost surely, 2^208643152 is an apocalyptic number.

It is an amenable number.

208643152 is a deficient number, since it is larger than the sum of its proper divisors (208223024).

208643152 is a wasteful number, since it uses less digits than its factorization.

208643152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755 (or 2749 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 208643152 is about 14444.4851760109. The cubic root of 208643152 is about 593.1092697147.

Adding to 208643152 its reverse (251346802), we get a palindrome (459989954).

The spelling of 208643152 in words is "two hundred eight million, six hundred forty-three thousand, one hundred fifty-two".