1298826984 has 128 divisors (see below), whose sum is σ = 4104656640. Its totient is φ = 333268992.

The previous prime is 1298826967. The next prime is 1298827027. The reversal of 1298826984 is 4896288921.

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, 72772 + ... + 88844.

It is an arithmetic number, because the mean of its divisors is an integer number (32067630).

Almost surely, 2^1298826984 is an apocalyptic number.

1298826984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298826984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2052328320).

1298826984 is an abundant number, since it is smaller than the sum of its proper divisors (2805829656).

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

1298826984 is a wasteful number, since it uses less digits than its factorization.

1298826984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16139 (or 16135 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 57.

The square root of 1298826984 is about 36039.2422783832. The cubic root of 1298826984 is about 1091.0645224037.

The spelling of 1298826984 in words is "one billion, two hundred ninety-eight million, eight hundred twenty-six thousand, nine hundred eighty-four".