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38413231 = 192418389
BaseRepresentation
bin1001001010001…
…0001110101111
32200021121001021
42102202032233
534313210411
63451155011
7644335633
oct222421657
980247037
1038413231
111a75747a
1210a45a67
137c5c52c
14515cdc3
15358ba71
hex24a23af

38413231 has 8 divisors (see below), whose sum is σ = 40607600. Its totient is φ = 36236160.

The previous prime is 38413213. The next prime is 38413253. The reversal of 38413231 is 13231483.

38413231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38413231 - 219 = 37888943 is a prime.

It is a super-2 number, since 2×384132312 = 2951152631718722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38413196 and 38413205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38413211) 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 7 ways as a sum of consecutive naturals, for example, 385 + ... + 8773.

It is an arithmetic number, because the mean of its divisors is an integer number (5075950).

Almost surely, 238413231 is an apocalyptic number.

38413231 is a deficient number, since it is larger than the sum of its proper divisors (2194369).

38413231 is a wasteful number, since it uses less digits than its factorization.

38413231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8649.

The product of its digits is 1728, while the sum is 25.

The square root of 38413231 is about 6197.8408337098. The cubic root of 38413231 is about 337.4118097879.

The spelling of 38413231 in words is "thirty-eight million, four hundred thirteen thousand, two hundred thirty-one".

Divisors: 1 19 241 4579 8389 159391 2021749 38413231