1378380 has 24 divisors (see below), whose sum is σ = 3859632. Its totient is φ = 367552.

The previous prime is 1378373. The next prime is 1378387. The reversal of 1378380 is 838731.

It is an interprime number because it is at equal distance from previous prime (1378373) and next prime (1378387).

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 (1378387) 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 7 ways as a sum of consecutive naturals, for example, 11427 + ... + 11546.

It is an arithmetic number, because the mean of its divisors is an integer number (160818).

2^1378380 is an apocalyptic number.

1378380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378380 is an abundant number, since it is smaller than the sum of its proper divisors (2481252).

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

1378380 is a wasteful number, since it uses less digits than its factorization.

1378380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22985 (or 22983 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1378380 is about 1174.0442921798. The cubic root of 1378380 is about 111.2900457609.

The spelling of 1378380 in words is "one million, three hundred seventy-eight thousand, three hundred eighty".