| Base | Representation |
|---|---|
| bin | 1001001011010… |
| … | …1011001011100 |
| 3 | 2200102120202000 |
| 4 | 2102311121130 |
| 5 | 34323213430 |
| 6 | 3453002300 |
| 7 | 645113550 |
| oct | 222653134 |
| 9 | 80376660 |
| 10 | 38491740 |
| 11 | 1a800461 |
| 12 | 10a83390 |
| 13 | 7c891a1 |
| 14 | 517d860 |
| 15 | 35a4e60 |
| hex | 24b565c |
38491740 has 192 divisors, whose sum is σ = 145152000. Its totient is φ = 8266752.
The previous prime is 38491721. The next prime is 38491753. The reversal of 38491740 is 4719483.
It is a happy number.
38491740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×384917402 = 2963228096455200, which contains 22 as substring.
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 = 38491695 and 38491704.
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 63 ways as a sum of consecutive naturals, for example, 63961 + ... + 64559.
It is an arithmetic number, because the mean of its divisors is an integer number (756000).
Almost surely, 238491740 is an apocalyptic number.
38491740 is a gapful number since it is divisible by the number (30) 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 38491740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72576000).
38491740 is an abundant number, since it is smaller than the sum of its proper divisors (106660260).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
38491740 is a wasteful number, since it uses less digits than its factorization.
38491740 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 641 (or 633 counting only the distinct ones).
The product of its (nonzero) digits is 24192, while the sum is 36.
The square root of 38491740 is about 6204.1711775224. The cubic root of 38491740 is about 337.6415208959.
The spelling of 38491740 in words is "thirty-eight million, four hundred ninety-one thousand, seven hundred forty".
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