1297213280 has 48 divisors (see below), whose sum is σ = 3343276944. Its totient is φ = 471713280.

The previous prime is 1297213261. The next prime is 1297213289. The reversal of 1297213280 is 823127921.

It is a self number, because there is not a number n which added to its sum of digits gives 1297213280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297213289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366767 + ... + 370286.

It is an arithmetic number, because the mean of its divisors is an integer number (69651603).

Almost surely, 2^1297213280 is an apocalyptic number.

1297213280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1297213280 is an abundant number, since it is smaller than the sum of its proper divisors (2046063664).

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

1297213280 is a wasteful number, since it uses less digits than its factorization.

1297213280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737079 (or 737071 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1297213280 is about 36016.8471690680. The cubic root of 1297213280 is about 1090.6124773728.

The spelling of 1297213280 in words is "one billion, two hundred ninety-seven million, two hundred thirteen thousand, two hundred eighty".