1287334608 has 80 divisors (see below), whose sum is σ = 3812315520. Its totient is φ = 366686208.

The previous prime is 1287334603. The next prime is 1287334651. The reversal of 1287334608 is 8064337821.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1287334608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287334603) 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, 107548 + ... + 118916.

It is an arithmetic number, because the mean of its divisors is an integer number (47653944).

Almost surely, 2^1287334608 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 1287334608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1906157760).

1287334608 is an abundant number, since it is smaller than the sum of its proper divisors (2524980912).

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

1287334608 is a wasteful number, since it uses less digits than its factorization.

1287334608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11724 (or 11718 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 1287334608 is about 35879.4454806648. The cubic root of 1287334608 is about 1087.8369718602.

The spelling of 1287334608 in words is "one billion, two hundred eighty-seven million, three hundred thirty-four thousand, six hundred eight".