208143464 has 16 divisors (see below), whose sum is σ = 392890500. Its totient is φ = 103372672.

The previous prime is 208143451. The next prime is 208143487. The reversal of 208143464 is 464341802.

It can be written as a sum of positive squares in 2 ways, for example, as 194379364 + 13764100 = 13942^2 + 3710^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 208143464.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86117 + ... + 88500.

Almost surely, 2^208143464 is an apocalyptic number.

It is an amenable number.

208143464 is a deficient number, since it is larger than the sum of its proper divisors (184747036).

208143464 is a wasteful number, since it uses less digits than its factorization.

208143464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174772 (or 174768 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 208143464 is about 14427.1779638292. The cubic root of 208143464 is about 592.6354040209.

The spelling of 208143464 in words is "two hundred eight million, one hundred forty-three thousand, four hundred sixty-four".