1297280 has 32 divisors (see below), whose sum is σ = 3102840. Its totient is φ = 518656.

The previous prime is 1297279. The next prime is 1297297. The reversal of 1297280 is 827921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374 + ... + 1653.

2^1297280 is an apocalyptic number.

1297280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1297280 is an abundant number, since it is smaller than the sum of its proper divisors (1805560).

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

1297280 is an equidigital number, since it uses as much as digits as its factorization.

1297280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046 (or 2034 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1297280 is about 1138.9820016137. The cubic root of 1297280 is about 109.0631174996.

The spelling of 1297280 in words is "one million, two hundred ninety-seven thousand, two hundred eighty".