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38038231 = 7111729059
BaseRepresentation
bin1001000100011…
…0101011010111
32122120112122101
42101012223113
534214210411
63435142531
7641214430
oct221065327
978515571
1038038231
111a520760
12108a4a47
137b5a93a
1450a2487
1535158c1
hex2446ad7

38038231 has 16 divisors (see below), whose sum is σ = 50215680. Its totient is φ = 27895680.

The previous prime is 38038229. The next prime is 38038243. The reversal of 38038231 is 13283083.

38038231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 38038231 - 21 = 38038229 is a prime.

It is a super-2 number, since 2×380382312 = 2893814035218722, which contains 22 as substring.

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 38038231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38038211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13221 + ... + 15838.

It is an arithmetic number, because the mean of its divisors is an integer number (3138480).

Almost surely, 238038231 is an apocalyptic number.

38038231 is a deficient number, since it is larger than the sum of its proper divisors (12177449).

38038231 is a wasteful number, since it uses less digits than its factorization.

38038231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29094.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 38038231 is about 6167.5141669882. The cubic root of 38038231 is about 336.3102499795.

The spelling of 38038231 in words is "thirty-eight million, thirty-eight thousand, two hundred thirty-one".

Divisors: 1 7 11 17 77 119 187 1309 29059 203413 319649 494003 2237543 3458021 5434033 38038231