| Base | Representation |
|---|---|
| bin | 10000101011101… |
| … | …10010110000000 |
| 3 | 100202022221220220 |
| 4 | 20111312112000 |
| 5 | 241311222334 |
| 6 | 21515303040 |
| 7 | 3316341630 |
| oct | 1025662600 |
| 9 | 322287826 |
| 10 | 139945344 |
| 11 | 71aa5010 |
| 12 | 3aa4aa80 |
| 13 | 22cbb4c6 |
| 14 | 1482c6c0 |
| 15 | c445449 |
| hex | 8576580 |
139945344 has 128 divisors (see below), whose sum is σ = 463553280. Its totient is φ = 36341760.
The previous prime is 139945327. The next prime is 139945361. The reversal of 139945344 is 443549931.
It is an interprime number because it is at equal distance from previous prime (139945327) and next prime (139945361).
It is a tau number, because it is divible by the number of its divisors (128).
It is a Harshad number since it is a multiple of its sum of digits (42).
It is a junction number, because it is equal to n+sod(n) for n = 139945296 and 139945305.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27202 + ... + 31934.
It is an arithmetic number, because the mean of its divisors is an integer number (3621510).
Almost surely, 2139945344 is an apocalyptic number.
139945344 is a gapful number since it is divisible by the number (14) 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 139945344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231776640).
139945344 is an abundant number, since it is smaller than the sum of its proper divisors (323607936).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
139945344 is a wasteful number, since it uses less digits than its factorization.
139945344 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4768 (or 4756 counting only the distinct ones).
The product of its digits is 233280, while the sum is 42.
The square root of 139945344 is about 11829.8497031873. The cubic root of 139945344 is about 519.1818297333.
The spelling of 139945344 in words is "one hundred thirty-nine million, nine hundred forty-five thousand, three hundred forty-four".
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