1297800 has 144 divisors (see below), whose sum is σ = 5029440. Its totient is φ = 293760.

The previous prime is 1297799. The next prime is 1297841. The reversal of 1297800 is 87921.

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, 12549 + ... + 12651.

2^1297800 is an apocalyptic number.

1297800 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 1297800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2514720).

1297800 is an abundant number, since it is smaller than the sum of its proper divisors (3731640).

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

1297800 is a wasteful number, since it uses less digits than its factorization.

1297800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1297800 is about 1139.2102527629. The cubic root of 1297800 is about 109.0776877916.

The spelling of 1297800 in words is "one million, two hundred ninety-seven thousand, eight hundred".