1320396 has 48 divisors (see below), whose sum is σ = 3843840. Its totient is φ = 342720.

The previous prime is 1320391. The next prime is 1320409. The reversal of 1320396 is 6930231.

1320396 = T₂₉₃ + T₂₉₄ + ... + T₃₂₀.

It is an Ulam number.

1320396 is a modest number, since divided by 396 gives 132 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1320391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210 + ... + 1638.

It is an arithmetic number, because the mean of its divisors is an integer number (80080).

2^1320396 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 1320396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1921920).

1320396 is an abundant number, since it is smaller than the sum of its proper divisors (2523444).

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

1320396 is a wasteful number, since it uses less digits than its factorization.

1320396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 1320396 is about 1149.0848532637. The cubic root of 1320396 is about 109.7070995650.

The spelling of 1320396 in words is "one million, three hundred twenty thousand, three hundred ninety-six".