1287348930 has 64 divisors (see below), whose sum is σ = 3923354880. Its totient is φ = 294250752.

The previous prime is 1287348877. The next prime is 1287348973. The reversal of 1287348930 is 398437821.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338679 + ... + 342458.

It is an arithmetic number, because the mean of its divisors is an integer number (61302420).

Almost surely, 2^1287348930 is an apocalyptic number.

1287348930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1287348930 is an abundant number, since it is smaller than the sum of its proper divisors (2636005950).

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

1287348930 is a wasteful number, since it uses less digits than its factorization.

1287348930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681160 (or 681154 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1287348930 is about 35879.6450651341. The cubic root of 1287348930 is about 1087.8410060208.

The spelling of 1287348930 in words is "one billion, two hundred eighty-seven million, three hundred forty-eight thousand, nine hundred thirty".