1297408 has 44 divisors (see below), whose sum is σ = 2980432. Its totient is φ = 552960.

The previous prime is 1297403. The next prime is 1297411. The reversal of 1297408 is 8047921.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1297408.

It is not an unprimeable number, because it can be changed into a prime (1297403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7078 + ... + 7258.

2^1297408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1297408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1490216).

1297408 is an abundant number, since it is smaller than the sum of its proper divisors (1683024).

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

1297408 is an equidigital number, since it uses as much as digits as its factorization.

1297408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1297408 is about 1139.0381907557. The cubic root of 1297408 is about 109.0667043943.

The spelling of 1297408 in words is "one million, two hundred ninety-seven thousand, four hundred eight".