| Base | Representation |
|---|---|
| bin | 10000100110101… |
| … | …00110010111000 |
| 3 | 100201002100020100 |
| 4 | 20103110302320 |
| 5 | 241124034030 |
| 6 | 21453155400 |
| 7 | 3310614516 |
| oct | 1023246270 |
| 9 | 321070210 |
| 10 | 139283640 |
| 11 | 71692951 |
| 12 | 3a78bb60 |
| 13 | 22b19272 |
| 14 | 146d94b6 |
| 15 | c364360 |
| hex | 84d4cb8 |
139283640 has 96 divisors (see below), whose sum is σ = 454240800. Its totient is φ = 37013760.
The previous prime is 139283621. The next prime is 139283647. The reversal of 139283640 is 46382931.
139283640 is a `hidden beast` number, since 1 + 3 + 9 + 2 + 8 + 3 + 640 = 666.
It is a hoax number, since the sum of its digits (36) 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 (36).
It is a junction number, because it is equal to n+sod(n) for n = 139283595 and 139283604.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (139283647) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151101 + ... + 152019.
It is an arithmetic number, because the mean of its divisors is an integer number (4731675).
Almost surely, 2139283640 is an apocalyptic number.
139283640 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 139283640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227120400).
139283640 is an abundant number, since it is smaller than the sum of its proper divisors (314957160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
139283640 is a wasteful number, since it uses less digits than its factorization.
139283640 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1357 (or 1350 counting only the distinct ones).
The product of its (nonzero) digits is 31104, while the sum is 36.
The square root of 139283640 is about 11801.8490076767. The cubic root of 139283640 is about 518.3622536245.
The spelling of 139283640 in words is "one hundred thirty-nine million, two hundred eighty-three thousand, six hundred forty".
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