208639272 has 32 divisors (see below), whose sum is σ = 526668480. Its totient is φ = 68870400.

The previous prime is 208639271. The next prime is 208639289. The reversal of 208639272 is 272936802.

208639272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 208639272.

It is not an unprimeable number, because it can be changed into a prime (208639271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39729 + ... + 44672.

It is an arithmetic number, because the mean of its divisors is an integer number (16458390).

Almost surely, 2^208639272 is an apocalyptic number.

It is an amenable number.

208639272 is an abundant number, since it is smaller than the sum of its proper divisors (318029208).

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

208639272 is a wasteful number, since it uses less digits than its factorization.

208639272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84513 (or 84509 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 208639272 is about 14444.3508680730. The cubic root of 208639272 is about 593.1055931370.

It can be divided in two parts, 20863 and 9272, that added together give a triangular number (30135 = T₂₄₅).

The spelling of 208639272 in words is "two hundred eight million, six hundred thirty-nine thousand, two hundred seventy-two".