| Base | Representation |
|---|---|
| bin | 1101001011010110010100… |
| … | …00000100101111000000000 |
| 3 | 10210121012022120112221020100 |
| 4 | 12211223022000211320000 |
| 5 | 12244230341031002314 |
| 6 | 141343543135242400 |
| 7 | 6050351661346020 |
| oct | 645531200457000 |
| 9 | 123535276487210 |
| 10 | 28977238531584 |
| 11 | 92621a5797042 |
| 12 | 32bbb96679400 |
| 13 | 132270763cc05 |
| 14 | 722711dc7a80 |
| 15 | 353b7016dc09 |
| hex | 1a5aca025e00 |
28977238531584 has 480 divisors, whose sum is σ = 97007565118464. Its totient is φ = 8156168847360.
The previous prime is 28977238531583. The next prime is 28977238531589. The reversal of 28977238531584 is 48513583277982.
It is a happy number.
28977238531584 is a `hidden beast` number, since 2 + 8 + 9 + 7 + 7 + 2 + 3 + 8 + 5 + 31 + 584 = 666.
28977238531584 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (72).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28977238531583) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 641194429 + ... + 641239619.
Almost surely, 228977238531584 is an apocalyptic number.
28977238531584 is a gapful number since it is divisible by the number (24) 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 28977238531584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48503782559232).
28977238531584 is an abundant number, since it is smaller than the sum of its proper divisors (68030326586880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28977238531584 is a wasteful number, since it uses less digits than its factorization.
28977238531584 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 45518 (or 45499 counting only the distinct ones).
The product of its digits is 812851200, while the sum is 72.
The spelling of 28977238531584 in words is "twenty-eight trillion, nine hundred seventy-seven billion, two hundred thirty-eight million, five hundred thirty-one thousand, five hundred eighty-four".
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