1397312 has 28 divisors (see below), whose sum is σ = 3169920. Its totient is φ = 598656.

The previous prime is 1397311. The next prime is 1397329. The reversal of 1397312 is 2137931.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (1397311) 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, 1112 + ... + 2007.

2^1397312 is an apocalyptic number.

It is an amenable number.

1397312 is an abundant number, since it is smaller than the sum of its proper divisors (1772608).

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

1397312 is an equidigital number, since it uses as much as digits as its factorization.

1397312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138 (or 3128 counting only the distinct ones).

The product of its digits is 1134, while the sum is 26.

The square root of 1397312 is about 1182.0795235516. The cubic root of 1397312 is about 111.7972522454.

The spelling of 1397312 in words is "one million, three hundred ninety-seven thousand, three hundred twelve".