1298280960 has 240 divisors, whose sum is σ = 4665076416. Its totient is φ = 346042368.

The previous prime is 1298280943. The next prime is 1298281009. The reversal of 1298280960 is 690828921.

It is a tau number, because it is divible by the number of its divisors (240).

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 23 ways as a sum of consecutive naturals, for example, 621037 + ... + 623123.

Almost surely, 2^1298280960 is an apocalyptic number.

1298280960 is a gapful number since it is divisible by the number (10) 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 1298280960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2332538208).

1298280960 is an abundant number, since it is smaller than the sum of its proper divisors (3366795456).

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

1298280960 is an frugal number, since it uses more digits than its factorization.

1298280960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125 (or 2097 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1298280960 is about 36031.6660730530. Note that the first 3 decimals coincide. The cubic root of 1298280960 is about 1090.9116072669.

The spelling of 1298280960 in words is "one billion, two hundred ninety-eight million, two hundred eighty thousand, nine hundred sixty".