Base | Representation |
---|---|
bin | 1001000101000… |
… | …1001011111111 |
3 | 2122122201200202 |
4 | 2101101023333 |
5 | 34222100104 |
6 | 3440114115 |
7 | 641454065 |
oct | 221211377 |
9 | 78581622 |
10 | 38081279 |
11 | 1a550035 |
12 | 1090593b |
13 | 7b74402 |
14 | 50b4035 |
15 | 352351e |
hex | 24512ff |
38081279 has 4 divisors (see below), whose sum is σ = 38301576. Its totient is φ = 37860984.
The previous prime is 38081269. The next prime is 38081297. The reversal of 38081279 is 97218083.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97218083 = 2287 ⋅42509.
It is a cyclic number.
It is not a de Polignac number, because 38081279 - 212 = 38077183 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (38081209) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109889 + ... + 110234.
It is an arithmetic number, because the mean of its divisors is an integer number (9575394).
Almost surely, 238081279 is an apocalyptic number.
38081279 is a deficient number, since it is larger than the sum of its proper divisors (220297).
38081279 is a wasteful number, since it uses less digits than its factorization.
38081279 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 220296.
The product of its (nonzero) digits is 24192, while the sum is 38.
The square root of 38081279 is about 6171.0030789167. The cubic root of 38081279 is about 336.4370699821.
Subtracting from 38081279 its sum of digits (38), we obtain a square (38081241 = 61712).
The spelling of 38081279 in words is "thirty-eight million, eighty-one thousand, two hundred seventy-nine".
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