208648284 has 24 divisors (see below), whose sum is σ = 524296080. Its totient is φ = 64199424.

The previous prime is 208648283. The next prime is 208648289. The reversal of 208648284 is 482846802.

It is a super-2 number, since 2×208648284² = 87068212832289312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208648283) 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, 668589 + ... + 668900.

It is an arithmetic number, because the mean of its divisors is an integer number (21845670).

Almost surely, 2^208648284 is an apocalyptic number.

It is an amenable number.

208648284 is an abundant number, since it is smaller than the sum of its proper divisors (315647796).

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

208648284 is a wasteful number, since it uses less digits than its factorization.

208648284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337509 (or 1337507 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 42.

The square root of 208648284 is about 14444.6628205715. The cubic root of 208648284 is about 593.1141325818.

The spelling of 208648284 in words is "two hundred eight million, six hundred forty-eight thousand, two hundred eighty-four".