1287883344 has 240 divisors, whose sum is σ = 3951747072. Its totient is φ = 360096000.

The previous prime is 1287883339. The next prime is 1287883357. The reversal of 1287883344 is 4433887821.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 1287883293 and 1287883302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4140949 + ... + 4141259.

Almost surely, 2^1287883344 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 1287883344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1975873536).

1287883344 is an abundant number, since it is smaller than the sum of its proper divisors (2663863728).

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

1287883344 is a wasteful number, since it uses less digits than its factorization.

1287883344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 381 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 1287883344 is about 35887.0916068717. The cubic root of 1287883344 is about 1087.9915161175.

The spelling of 1287883344 in words is "one billion, two hundred eighty-seven million, eight hundred eighty-three thousand, three hundred forty-four".