1297396800 has 504 divisors, whose sum is σ = 5381784512. Its totient is φ = 290304000.

The previous prime is 1297396753. The next prime is 1297396801. The reversal of 1297396800 is 86937921.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1297396801) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6148695 + ... + 6148905.

Almost surely, 2^1297396800 is an apocalyptic number.

1297396800 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 1297396800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2690892256).

1297396800 is an abundant number, since it is smaller than the sum of its proper divisors (4084387712).

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

1297396800 is a wasteful number, since it uses less digits than its factorization.

1297396800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1297396800 is about 36019.3947755928. The cubic root of 1297396800 is about 1090.6639055040.

The spelling of 1297396800 in words is "one billion, two hundred ninety-seven million, three hundred ninety-six thousand, eight hundred".