208428464 has 10 divisors (see below), whose sum is σ = 403830180. Its totient is φ = 104214224.

The previous prime is 208428457. The next prime is 208428487. The reversal of 208428464 is 464824802.

208428464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6513374 + ... + 6513405.

It is an arithmetic number, because the mean of its divisors is an integer number (40383018).

Almost surely, 2^208428464 is an apocalyptic number.

It is an amenable number.

208428464 is a deficient number, since it is larger than the sum of its proper divisors (195401716).

208428464 is a wasteful number, since it uses less digits than its factorization.

208428464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13026787 (or 13026781 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 38.

The square root of 208428464 is about 14437.0517765921. The cubic root of 208428464 is about 592.9057689194.

The spelling of 208428464 in words is "two hundred eight million, four hundred twenty-eight thousand, four hundred sixty-four".