1387887000 has 64 divisors (see below), whose sum is σ = 4330216800. Its totient is φ = 370102400.

The previous prime is 1387886971. The next prime is 1387887001. The reversal of 1387887000 is 7887831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387887001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228315 + ... + 234314.

Almost surely, 2^1387887000 is an apocalyptic number.

1387887000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1387887000 is an abundant number, since it is smaller than the sum of its proper divisors (2942329800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1387887000 is a wasteful number, since it uses less digits than its factorization.

1387887000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462653 (or 462639 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 1387887000 is about 37254.3554500678. The cubic root of 1387887000 is about 1115.4532399620.

The spelling of 1387887000 in words is "one billion, three hundred eighty-seven million, eight hundred eighty-seven thousand".