1298188800 has 360 divisors, whose sum is σ = 4749338880. Its totient is φ = 338534400.

The previous prime is 1298188789. The next prime is 1298188811. The reversal of 1298188800 is 88818921.

It is an interprime number because it is at equal distance from previous prime (1298188789) and next prime (1298188811).

It is a tau number, because it is divible by the number of its divisors (360).

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 35 ways as a sum of consecutive naturals, for example, 6796705 + ... + 6796895.

It is an arithmetic number, because the mean of its divisors is an integer number (13192608).

Almost surely, 2^1298188800 is an apocalyptic number.

1298188800 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 1298188800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2374669440).

1298188800 is an abundant number, since it is smaller than the sum of its proper divisors (3451150080).

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

1298188800 is a wasteful number, since it uses less digits than its factorization.

1298188800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 45.

The square root of 1298188800 is about 36030.3871752719. The cubic root of 1298188800 is about 1090.8857934419.

The spelling of 1298188800 in words is "one billion, two hundred ninety-eight million, one hundred eighty-eight thousand, eight hundred".