1297788 has 24 divisors (see below), whose sum is σ = 3067008. Its totient is φ = 427056.

The previous prime is 1297781. The next prime is 1297799. The reversal of 1297788 is 8877921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345 + ... + 1647.

It is an arithmetic number, because the mean of its divisors is an integer number (127792).

2^1297788 is an apocalyptic number.

It is an amenable number.

1297788 is an abundant number, since it is smaller than the sum of its proper divisors (1769220).

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

1297788 is a wasteful number, since it uses less digits than its factorization.

1297788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393 (or 1391 counting only the distinct ones).

The product of its digits is 56448, while the sum is 42.

The square root of 1297788 is about 1139.2049859441. The cubic root of 1297788 is about 109.0773515980.

The spelling of 1297788 in words is "one million, two hundred ninety-seven thousand, seven hundred eighty-eight".