139844320 has 96 divisors (see below), whose sum is σ = 411941376. Its totient is φ = 43584000.

The previous prime is 139844311. The next prime is 139844359. The reversal of 139844320 is 23448931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6645 + ... + 17995.

It is an arithmetic number, because the mean of its divisors is an integer number (4291056).

Almost surely, 2^139844320 is an apocalyptic number.

139844320 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 139844320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205970688).

139844320 is an abundant number, since it is smaller than the sum of its proper divisors (272097056).

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

139844320 is a wasteful number, since it uses less digits than its factorization.

139844320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11384 (or 11376 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 139844320 is about 11825.5790555896. The cubic root of 139844320 is about 519.0568703513.

The spelling of 139844320 in words is "one hundred thirty-nine million, eight hundred forty-four thousand, three hundred twenty".