1297860450 has 24 divisors (see below), whose sum is σ = 3218694288. Its totient is φ = 346096080.

The previous prime is 1297860409. The next prime is 1297860451. The reversal of 1297860450 is 540687921.

It is not an unprimeable number, because it can be changed into a prime (1297860451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4326052 + ... + 4326351.

It is an arithmetic number, because the mean of its divisors is an integer number (134112262).

Almost surely, 2^1297860450 is an apocalyptic number.

1297860450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1297860450 is an abundant number, since it is smaller than the sum of its proper divisors (1920833838).

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

1297860450 is a wasteful number, since it uses less digits than its factorization.

1297860450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8652418 (or 8652413 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 1297860450 is about 36025.8303165937. The cubic root of 1297860450 is about 1090.7938133555.

The spelling of 1297860450 in words is "one billion, two hundred ninety-seven million, eight hundred sixty thousand, four hundred fifty".