1320480 has 144 divisors (see below), whose sum is σ = 5189184. Its totient is φ = 299520.

The previous prime is 1320437. The next prime is 1320533. The reversal of 1320480 is 840231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10015 + ... + 10145.

It is an arithmetic number, because the mean of its divisors is an integer number (36036).

2^1320480 is an apocalyptic number.

1320480 is a gapful number since it is divisible by the number (10) 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 1320480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2594592).

1320480 is an abundant number, since it is smaller than the sum of its proper divisors (3868704).

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

1320480 is a wasteful number, since it uses less digits than its factorization.

1320480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1320480 is about 1149.1214035079. The cubic root of 1320480 is about 109.7094259380.

Subtracting from 1320480 its reverse (840231), we obtain a square (480249 = 693²).

The spelling of 1320480 in words is "one million, three hundred twenty thousand, four hundred eighty".