1393280 has 64 divisors (see below), whose sum is σ = 3818880. Its totient is φ = 476160.

The previous prime is 1393261. The next prime is 1393283. The reversal of 1393280 is 823931.

It is a tau number, because it is divible by the number of its divisors (64).

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (1393283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4325 + ... + 4635.

It is an arithmetic number, because the mean of its divisors is an integer number (59670).

2^1393280 is an apocalyptic number.

1393280 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 1393280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1909440).

1393280 is an abundant number, since it is smaller than the sum of its proper divisors (2425600).

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

1393280 is an equidigital number, since it uses as much as digits as its factorization.

1393280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1393280 is about 1180.3728224591. The cubic root of 1393280 is about 111.6896168269.

The spelling of 1393280 in words is "one million, three hundred ninety-three thousand, two hundred eighty".