| Base | Representation |
|---|---|
| bin | 100011001111… |
| … | …0100101110100 |
| 3 | 1021202122110100 |
| 4 | 1012132211310 |
| 5 | 14212203010 |
| 6 | 1455554100 |
| 7 | 313016040 |
| oct | 106364564 |
| 9 | 37678410 |
| 10 | 18475380 |
| 11 | a479910 |
| 12 | 622b930 |
| 13 | 3a9b4a1 |
| 14 | 264d020 |
| 15 | 194e2c0 |
| hex | 119e974 |
18475380 has 288 divisors, whose sum is σ = 73801728. Its totient is φ = 3628800.
The previous prime is 18475367. The next prime is 18475393. The reversal of 18475380 is 8357481.
18475380 = T792 + T793 + ... + T846.
It is an interprime number because it is at equal distance from previous prime (18475367) and next prime (18475393).
It is a super-2 number, since 2×184753802 = 682679332288800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 429639 + ... + 429681.
It is an arithmetic number, because the mean of its divisors is an integer number (256256).
Almost surely, 218475380 is an apocalyptic number.
18475380 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 18475380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36900864).
18475380 is an abundant number, since it is smaller than the sum of its proper divisors (55326348).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18475380 is a wasteful number, since it uses less digits than its factorization.
18475380 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 107 (or 102 counting only the distinct ones).
The product of its (nonzero) digits is 26880, while the sum is 36.
The square root of 18475380 is about 4298.2996638206. The cubic root of 18475380 is about 264.3612478805.
It can be divided in two parts, 1847 and 5380, that added together give a palindrome (7227).
The spelling of 18475380 in words is "eighteen million, four hundred seventy-five thousand, three hundred eighty".
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