1320272 has 40 divisors (see below), whose sum is σ = 2782560. Its totient is φ = 604800.

The previous prime is 1320251. The next prime is 1320287. The reversal of 1320272 is 2720231.

It is a self number, because there is not a number n which added to its sum of digits gives 1320272.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13022 + ... + 13122.

It is an arithmetic number, because the mean of its divisors is an integer number (69564).

2^1320272 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 1320272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1391280).

1320272 is an abundant number, since it is smaller than the sum of its proper divisors (1462288).

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

1320272 is a wasteful number, since it uses less digits than its factorization.

1320272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 165 counting only the distinct ones).

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

The square root of 1320272 is about 1149.0308960163. The cubic root of 1320272 is about 109.7036652149.

The spelling of 1320272 in words is "one million, three hundred twenty thousand, two hundred seventy-two".