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38238399 = 346171109
BaseRepresentation
bin1001000111011…
…1100010111111
32122221201020000
42101313202333
534242112044
63443325343
7643010133
oct221674277
978851200
1038238399
111a648091
1210980853
137bcaa94
1451153c3
153554d69
hex24778bf

38238399 has 40 divisors (see below), whose sum is σ = 59415840. Its totient is φ = 24494400.

The previous prime is 38238373. The next prime is 38238413. The reversal of 38238399 is 99383283.

It is not a de Polignac number, because 38238399 - 28 = 38238143 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38231399) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 350757 + ... + 350865.

It is an arithmetic number, because the mean of its divisors is an integer number (1485396).

Almost surely, 238238399 is an apocalyptic number.

38238399 is a deficient number, since it is larger than the sum of its proper divisors (21177441).

38238399 is a wasteful number, since it uses less digits than its factorization.

38238399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 244 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 38238399 is about 6183.7204820399. The cubic root of 38238399 is about 336.8991383096.

It can be divided in two parts, 382 and 38399, that added together give a triangular number (38781 = T278).

The spelling of 38238399 in words is "thirty-eight million, two hundred thirty-eight thousand, three hundred ninety-nine".

Divisors: 1 3 9 27 61 71 81 109 183 213 327 549 639 981 1647 1917 2943 4331 4941 5751 6649 7739 8829 12993 19947 23217 38979 59841 69651 116937 179523 208953 350811 472079 538569 626859 1416237 4248711 12746133 38238399