1378580 has 48 divisors (see below), whose sum is σ = 3400320. Its totient is φ = 459648.

The previous prime is 1378579. The next prime is 1378589. The reversal of 1378580 is 858731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378589) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5906 + ... + 6134.

It is an arithmetic number, because the mean of its divisors is an integer number (70840).

2^1378580 is an apocalyptic number.

1378580 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 1378580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1700160).

1378580 is an abundant number, since it is smaller than the sum of its proper divisors (2021740).

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

1378580 is a wasteful number, since it uses less digits than its factorization.

1378580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1378580 is about 1174.1294647525. The cubic root of 1378580 is about 111.2954281501.

The spelling of 1378580 in words is "one million, three hundred seventy-eight thousand, five hundred eighty".