1387008256 has 36 divisors (see below), whose sum is σ = 2771690572. Its totient is φ = 692729856.

The previous prime is 1387008199. The next prime is 1387008263. The reversal of 1387008256 is 6528007831.

It can be written as a sum of positive squares in 2 ways, for example, as 1294848256 + 92160000 = 35984^2 + 9600^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 277330 + ... + 282286.

Almost surely, 2^1387008256 is an apocalyptic number.

1387008256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1387008256 is a deficient number, since it is larger than the sum of its proper divisors (1384682316).

1387008256 is an equidigital number, since it uses as much as digits as its factorization.

1387008256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6066 (or 6052 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1387008256 is about 37242.5597401682. The cubic root of 1387008256 is about 1115.2177729569.

The spelling of 1387008256 in words is "one billion, three hundred eighty-seven million, eight thousand, two hundred fifty-six".