| Base | Representation |
|---|---|
| bin | 10000100110001… |
| … | …01011111000000 |
| 3 | 100200222011012200 |
| 4 | 20103011133000 |
| 5 | 241120032203 |
| 6 | 21451553200 |
| 7 | 3310233630 |
| oct | 1023053700 |
| 9 | 320864180 |
| 10 | 139220928 |
| 11 | 7164a820 |
| 12 | 3a75b800 |
| 13 | 22ac6862 |
| 14 | 146c06c0 |
| 15 | c3509a3 |
| hex | 84c57c0 |
139220928 has 336 divisors, whose sum is σ = 516062976. Its totient is φ = 34836480.
The previous prime is 139220927. The next prime is 139220929. The reversal of 139220928 is 829022931.
It is an interprime number because it is at equal distance from previous prime (139220927) and next prime (139220929).
It is a tau number, because it is divible by the number of its divisors (336).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 139220892 and 139220901.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (139220927) by changing a digit.
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 47 ways as a sum of consecutive naturals, for example, 1907100 + ... + 1907172.
Almost surely, 2139220928 is an apocalyptic number.
139220928 is a gapful number since it is divisible by the number (18) 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 139220928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258031488).
139220928 is an abundant number, since it is smaller than the sum of its proper divisors (376842048).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
139220928 is a wasteful number, since it uses less digits than its factorization.
139220928 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 152 (or 139 counting only the distinct ones).
The product of its (nonzero) digits is 15552, while the sum is 36.
The square root of 139220928 is about 11799.1918367319. The cubic root of 139220928 is about 518.2844449801.
The spelling of 139220928 in words is "one hundred thirty-nine million, two hundred twenty thousand, nine hundred twenty-eight".
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