| Base | Representation |
|---|---|
| bin | 110010110110… |
| … | …1010001100000 |
| 3 | 1212011120100220 |
| 4 | 1211231101200 |
| 5 | 23311140414 |
| 6 | 2351243040 |
| 7 | 442423506 |
| oct | 145552140 |
| 9 | 55146326 |
| 10 | 26661984 |
| 11 | 140605a8 |
| 12 | 8b19480 |
| 13 | 56a682b |
| 14 | 3780676 |
| 15 | 2519ca9 |
| hex | 196d460 |
26661984 has 108 divisors (see below), whose sum is σ = 76822452. Its totient is φ = 8094720.
The previous prime is 26661979. The next prime is 26661989. The reversal of 26661984 is 48916662.
It is an interprime number because it is at equal distance from previous prime (26661979) and next prime (26661989).
It is a super-2 number, since 2×266619842 = 1421722781632512, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (26661989) 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 17 ways as a sum of consecutive naturals, for example, 860049 + ... + 860079.
It is an arithmetic number, because the mean of its divisors is an integer number (711319).
Almost surely, 226661984 is an apocalyptic number.
26661984 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 26661984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38411226).
26661984 is an abundant number, since it is smaller than the sum of its proper divisors (50160468).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
26661984 is a wasteful number, since it uses less digits than its factorization.
26661984 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 109 (or 53 counting only the distinct ones).
The product of its digits is 124416, while the sum is 42.
The square root of 26661984 is about 5163.5243777869. The cubic root of 26661984 is about 298.7428279763.
Multiplying 26661984 by its product of digits (124416), we get a square (3317177401344 = 18213122).
The spelling of 26661984 in words is "twenty-six million, six hundred sixty-one thousand, nine hundred eighty-four".
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