1387317504 has 144 divisors (see below), whose sum is σ = 3977951040. Its totient is φ = 427622400.

The previous prime is 1387317497. The next prime is 1387317523. The reversal of 1387317504 is 4057137831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 769404 + ... + 771204.

It is an arithmetic number, because the mean of its divisors is an integer number (27624660).

Almost surely, 2^1387317504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1387317504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1988975520).

1387317504 is an abundant number, since it is smaller than the sum of its proper divisors (2590633536).

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

1387317504 is a wasteful number, since it uses less digits than its factorization.

1387317504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896 (or 1882 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 1387317504 is about 37246.7113179137. The cubic root of 1387317504 is about 1115.3006499539.

The spelling of 1387317504 in words is "one billion, three hundred eighty-seven million, three hundred seventeen thousand, five hundred four".