1298287512 has 48 divisors (see below), whose sum is σ = 3520895040. Its totient is φ = 432184128.

The previous prime is 1298287493. The next prime is 1298287513. The reversal of 1298287512 is 2157828921.

1298287512 is a `hidden beast` number, since 129 + 8 + 2 + 8 + 7 + 512 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298287513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43993 + ... + 67319.

It is an arithmetic number, because the mean of its divisors is an integer number (73351980).

Almost surely, 2^1298287512 is an apocalyptic number.

1298287512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1298287512 is an abundant number, since it is smaller than the sum of its proper divisors (2222607528).

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

1298287512 is a wasteful number, since it uses less digits than its factorization.

1298287512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24112 (or 24105 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 1298287512 is about 36031.7569929639. The cubic root of 1298287512 is about 1090.9134424220.

The spelling of 1298287512 in words is "one billion, two hundred ninety-eight million, two hundred eighty-seven thousand, five hundred twelve".