1297776 has 40 divisors (see below), whose sum is σ = 3531520. Its totient is φ = 409536.

The previous prime is 1297771. The next prime is 1297781. The reversal of 1297776 is 6777921.

It is an interprime number because it is at equal distance from previous prime (1297771) and next prime (1297781).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (88288).

2^1297776 is an apocalyptic number.

1297776 is a gapful number since it is divisible by the number (16) 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 1297776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1765760).

1297776 is an abundant number, since it is smaller than the sum of its proper divisors (2233744).

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

1297776 is a wasteful number, since it uses less digits than its factorization.

1297776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453 (or 1447 counting only the distinct ones).

The product of its digits is 37044, while the sum is 39.

The square root of 1297776 is about 1139.1997191011. The cubic root of 1297776 is about 109.0770154023.

The spelling of 1297776 in words is "one million, two hundred ninety-seven thousand, seven hundred seventy-six".