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38388241 = 255715013
BaseRepresentation
bin1001001001110…
…0001000010001
32200020022202201
42102130020101
534311410431
63450443201
7644203033
oct222341021
980208681
1038388241
111a73a721
1210a33501
137c51048
145153c53
153584461
hex249c211

38388241 has 4 divisors (see below), whose sum is σ = 38405812. Its totient is φ = 38370672.

The previous prime is 38388239. The next prime is 38388289. The reversal of 38388241 is 14288383.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22420225 + 15968016 = 4735^2 + 3996^2 .

It is a cyclic number.

It is not a de Polignac number, because 38388241 - 21 = 38388239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38388241.

It is not an unprimeable number, because it can be changed into a prime (38388641) 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, 4950 + ... + 10063.

It is an arithmetic number, because the mean of its divisors is an integer number (9601453).

Almost surely, 238388241 is an apocalyptic number.

It is an amenable number.

38388241 is a deficient number, since it is larger than the sum of its proper divisors (17571).

38388241 is a wasteful number, since it uses less digits than its factorization.

38388241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17570.

The product of its digits is 36864, while the sum is 37.

The square root of 38388241 is about 6195.8244810517. The cubic root of 38388241 is about 337.3386253664.

The spelling of 38388241 in words is "thirty-eight million, three hundred eighty-eight thousand, two hundred forty-one".

Divisors: 1 2557 15013 38388241