1298676648 has 64 divisors (see below), whose sum is σ = 3447956160. Its totient is φ = 406209536.

The previous prime is 1298676647. The next prime is 1298676679. The reversal of 1298676648 is 8466768921.

It is a super-2 number, since 2×1298676648² = 3373122072121031808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1298676647) 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, 136990 + ... + 146162.

It is an arithmetic number, because the mean of its divisors is an integer number (53874315).

Almost surely, 2^1298676648 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 1298676648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723978080).

1298676648 is an abundant number, since it is smaller than the sum of its proper divisors (2149279512).

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

1298676648 is a wasteful number, since it uses less digits than its factorization.

1298676648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9546 (or 9542 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 57.

The square root of 1298676648 is about 36037.1564915991. The cubic root of 1298676648 is about 1091.0224247759.

The spelling of 1298676648 in words is "one billion, two hundred ninety-eight million, six hundred seventy-six thousand, six hundred forty-eight".