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38300785 = 511367789
BaseRepresentation
bin1001001000011…
…0110001110001
32200001212210121
42102012301301
534301111120
63444530241
7643360045
oct222066161
980055717
1038300785
111a68aa46
12109b0981
137c202b3
145130025
1535685aa
hex2486c71

38300785 has 8 divisors (see below), whose sum is σ = 46368360. Its totient is φ = 30369024.

The previous prime is 38300783. The next prime is 38300791. The reversal of 38300785 is 58700383.

It can be written as a sum of positive squares in 4 ways, for example, as 2408704 + 35892081 = 1552^2 + 5991^2 .

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 38300785 - 21 = 38300783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38300785.

It is not an unprimeable number, because it can be changed into a prime (38300783) 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 7 ways as a sum of consecutive naturals, for example, 33330 + ... + 34459.

It is an arithmetic number, because the mean of its divisors is an integer number (5796045).

Almost surely, 238300785 is an apocalyptic number.

It is an amenable number.

38300785 is a deficient number, since it is larger than the sum of its proper divisors (8067575).

38300785 is a wasteful number, since it uses less digits than its factorization.

38300785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67907.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 38300785 is about 6188.7628004311. The cubic root of 38300785 is about 337.0822558943.

The spelling of 38300785 in words is "thirty-eight million, three hundred thousand, seven hundred eighty-five".

Divisors: 1 5 113 565 67789 338945 7660157 38300785