1387216448 has 28 divisors (see below), whose sum is σ = 2897642160. Its totient is φ = 657101952.

The previous prime is 1387216447. The next prime is 1387216499. The reversal of 1387216448 is 8446127831.

It is a junction number, because it is equal to n+sod(n) for n = 1387216399 and 1387216408.

It is not an unprimeable number, because it can be changed into a prime (1387216447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569186 + ... + 571617.

It is an arithmetic number, because the mean of its divisors is an integer number (103487220).

Almost surely, 2^1387216448 is an apocalyptic number.

It is an amenable number.

1387216448 is an abundant number, since it is smaller than the sum of its proper divisors (1510425712).

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

1387216448 is a wasteful number, since it uses less digits than its factorization.

1387216448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140834 (or 1140824 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 1387216448 is about 37245.3547170651. The cubic root of 1387216448 is about 1115.2735687802.

The spelling of 1387216448 in words is "one billion, three hundred eighty-seven million, two hundred sixteen thousand, four hundred forty-eight".