1378560 has 72 divisors (see below), whose sum is σ = 4415040. Its totient is φ = 366592.

The previous prime is 1378541. The next prime is 1378561. The reversal of 1378560 is 658731.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1378561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3661 + ... + 4019.

It is an arithmetic number, because the mean of its divisors is an integer number (61320).

2^1378560 is an apocalyptic number.

1378560 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 1378560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2207520).

1378560 is an abundant number, since it is smaller than the sum of its proper divisors (3036480).

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

1378560 is an equidigital number, since it uses as much as digits as its factorization.

1378560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1378560 is about 1174.1209477733. The cubic root of 1378560 is about 111.2948899346.

The spelling of 1378560 in words is "one million, three hundred seventy-eight thousand, five hundred sixty".