1389882240 has 288 divisors, whose sum is σ = 4998834360. Its totient is φ = 369515520.

The previous prime is 1389882239. The next prime is 1389882283. The reversal of 1389882240 is 422889831.

1389882240 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4198875 + ... + 4199205.

Almost surely, 2^1389882240 is an apocalyptic number.

1389882240 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 1389882240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2499417180).

1389882240 is an abundant number, since it is smaller than the sum of its proper divisors (3608952120).

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

1389882240 is an frugal number, since it uses more digits than its factorization.

1389882240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 1389882240 is about 37281.1244465614. The cubic root of 1389882240 is about 1115.9875128676.

The spelling of 1389882240 in words is "one billion, three hundred eighty-nine million, eight hundred eighty-two thousand, two hundred forty".