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38906753 = 221317581
BaseRepresentation
bin1001010001101…
…0101110000001
32201012200000212
42110122232001
534430004003
63505523505
7651462524
oct224325601
981180025
1038906753
111aa64246
1211043595
1380a3062
14524abbb
153637dd8
hex251ab81

38906753 has 4 divisors (see below), whose sum is σ = 38926548. Its totient is φ = 38886960.

The previous prime is 38906743. The next prime is 38906759. The reversal of 38906753 is 35760983.

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 27804529 + 11102224 = 5273^2 + 3332^2 .

It is a cyclic number.

It is not a de Polignac number, because 38906753 - 218 = 38644609 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 38906753.

It is not an unprimeable number, because it can be changed into a prime (38906759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6578 + ... + 11003.

It is an arithmetic number, because the mean of its divisors is an integer number (9731637).

Almost surely, 238906753 is an apocalyptic number.

It is an amenable number.

38906753 is a deficient number, since it is larger than the sum of its proper divisors (19795).

38906753 is a wasteful number, since it uses less digits than its factorization.

38906753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19794.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 38906753 is about 6237.5277955293. The cubic root of 38906753 is about 338.8506548562.

The spelling of 38906753 in words is "thirty-eight million, nine hundred six thousand, seven hundred fifty-three".

Divisors: 1 2213 17581 38906753