1387228208 has 10 divisors (see below), whose sum is σ = 2687754684. Its totient is φ = 693614096.

The previous prime is 1387228189. The next prime is 1387228217. The reversal of 1387228208 is 8028227831.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43350866 + ... + 43350897.

Almost surely, 2^1387228208 is an apocalyptic number.

It is an amenable number.

1387228208 is a deficient number, since it is larger than the sum of its proper divisors (1300526476).

1387228208 is an equidigital number, since it uses as much as digits as its factorization.

1387228208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86701771 (or 86701765 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 1387228208 is about 37245.5125887670. The cubic root of 1387228208 is about 1115.2767203143.

The spelling of 1387228208 in words is "one billion, three hundred eighty-seven million, two hundred twenty-eight thousand, two hundred eight".