1320704 has 72 divisors (see below), whose sum is σ = 3335808. Its totient is φ = 506880.

The previous prime is 1320667. The next prime is 1320721. The reversal of 1320704 is 4070231.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19679 + ... + 19745.

2^1320704 is an apocalyptic number.

1320704 is a gapful number since it is divisible by the number (14) 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 1320704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1667904).

1320704 is an abundant number, since it is smaller than the sum of its proper divisors (2015104).

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

1320704 is an equidigital number, since it uses as much as digits as its factorization.

1320704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1320704 is about 1149.2188651428. The cubic root of 1320704 is about 109.7156291171.

Adding to 1320704 its reverse (4070231), we get a palindrome (5390935).

The spelling of 1320704 in words is "one million, three hundred twenty thousand, seven hundred four".