1297760 has 24 divisors (see below), whose sum is σ = 3066336. Its totient is φ = 519040.

The previous prime is 1297739. The next prime is 1297771. The reversal of 1297760 is 677921.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 3896 + ... + 4215.

It is an arithmetic number, because the mean of its divisors is an integer number (127764).

2^1297760 is an apocalyptic number.

1297760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1297760 is an abundant number, since it is smaller than the sum of its proper divisors (1768576).

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

1297760 is an equidigital number, since it uses as much as digits as its factorization.

1297760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8126 (or 8118 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 1297760 is about 1139.1926966058. The cubic root of 1297760 is about 109.0765671381.

The spelling of 1297760 in words is "one million, two hundred ninety-seven thousand, seven hundred sixty".