| Base | Representation |
|---|---|
| bin | 10000011101000… |
| … | …00011100101100 |
| 3 | 100121201011202000 |
| 4 | 20032200130230 |
| 5 | 240313130102 |
| 6 | 21410132300 |
| 7 | 3264104400 |
| oct | 1016403454 |
| 9 | 317634660 |
| 10 | 138020652 |
| 11 | 709aaa60 |
| 12 | 3a281090 |
| 13 | 22796433 |
| 14 | 1448b100 |
| 15 | c1b501c |
| hex | 83a072c |
138020652 has 144 divisors (see below), whose sum is σ = 454285440. Its totient is φ = 35834400.
The previous prime is 138020651. The next prime is 138020653. The reversal of 138020652 is 256020831.
138020652 is a `hidden beast` number, since 1 + 3 + 8 + 0 + 2 + 0 + 652 = 666.
It is an interprime number because it is at equal distance from previous prime (138020651) and next prime (138020653).
It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is not an unprimeable number, because it can be changed into a prime (138020651) 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, 57027 + ... + 59397.
It is an arithmetic number, because the mean of its divisors is an integer number (3154760).
Almost surely, 2138020652 is an apocalyptic number.
138020652 is a gapful number since it is divisible by the number (12) 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 138020652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227142720).
138020652 is an abundant number, since it is smaller than the sum of its proper divisors (316264788).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
138020652 is a wasteful number, since it uses less digits than its factorization.
138020652 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2409 (or 2394 counting only the distinct ones).
The product of its (nonzero) digits is 2880, while the sum is 27.
The square root of 138020652 is about 11748.2190990805. The cubic root of 138020652 is about 516.7907022820.
The spelling of 138020652 in words is "one hundred thirty-eight million, twenty thousand, six hundred fifty-two".
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