| Base | Representation |
|---|---|
| bin | 1101001010100001101111… |
| … | …11001101100100101000000 |
| 3 | 10210111111110210121021200000 |
| 4 | 12211100313321230211000 |
| 5 | 12243300041431243340 |
| 6 | 141322554531400000 |
| 7 | 6045332432156460 |
| oct | 645206771544500 |
| 9 | 123444423537600 |
| 10 | 28949017446720 |
| 11 | 9251233716308 |
| 12 | 32b661b453000 |
| 13 | 131cb5a994a27 |
| 14 | 7211d5d27ba0 |
| 15 | 35306c7d5d30 |
| hex | 1a5437e6c940 |
28949017446720 has 672 divisors, whose sum is σ = 118217729779968. Its totient is φ = 6605378813952.
The previous prime is 28949017446703. The next prime is 28949017446721. The reversal of 28949017446720 is 2764471094982.
28949017446720 is a `hidden beast` number, since 2 + 8 + 9 + 490 + 1 + 74 + 4 + 6 + 72 + 0 = 666.
It is a tau number, because it is divible by the number of its divisors (672).
It is a super-2 number, since 2×289490174467202 (a number of 28 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (63).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28949017446721) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 314026554 + ... + 314118726.
It is an arithmetic number, because the mean of its divisors is an integer number (175919240744).
Almost surely, 228949017446720 is an apocalyptic number.
28949017446720 is a gapful number since it is divisible by the number (20) 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 28949017446720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59108864889984).
28949017446720 is an abundant number, since it is smaller than the sum of its proper divisors (89268712333248).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28949017446720 is an equidigital number, since it uses as much as digits as its factorization.
28949017446720 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 92789 (or 92767 counting only the distinct ones).
The product of its (nonzero) digits is 48771072, while the sum is 63.
The spelling of 28949017446720 in words is "twenty-eight trillion, nine hundred forty-nine billion, seventeen million, four hundred forty-six thousand, seven hundred twenty".
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