1389120 has 56 divisors (see below), whose sum is σ = 4413504. Its totient is φ = 370176.

The previous prime is 1389107. The next prime is 1389133. The reversal of 1389120 is 219831.

It is an interprime number because it is at equal distance from previous prime (1389107) and next prime (1389133).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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, 237 + ... + 1683.

2^1389120 is an apocalyptic number.

1389120 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 1389120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2206752).

1389120 is an abundant number, since it is smaller than the sum of its proper divisors (3024384).

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

1389120 is a wasteful number, since it uses less digits than its factorization.

1389120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1457 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1389120 is about 1178.6093500393. The cubic root of 1389120 is about 111.5783465395.

The spelling of 1389120 in words is "one million, three hundred eighty-nine thousand, one hundred twenty".