208220648 has 8 divisors (see below), whose sum is σ = 390413730. Its totient is φ = 104110320.

The previous prime is 208220647. The next prime is 208220651. The reversal of 208220648 is 846022802.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 192044164 + 16176484 = 13858^2 + 4022^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (208220647) 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 as a sum of consecutive naturals, namely, 13013783 + ... + 13013798.

Almost surely, 2^208220648 is an apocalyptic number.

It is an amenable number.

208220648 is a deficient number, since it is larger than the sum of its proper divisors (182193082).

208220648 is a wasteful number, since it uses less digits than its factorization.

208220648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26027587 (or 26027583 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 208220648 is about 14429.8526673005. The cubic root of 208220648 is about 592.7086488833.

The spelling of 208220648 in words is "two hundred eight million, two hundred twenty thousand, six hundred forty-eight".