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38386789 = 77177237
BaseRepresentation
bin1001001001101…
…1110001100101
32200020020202221
42102123301211
534311334124
63450432341
7644165560
oct222336145
980206687
1038386789
111a739621
1210a326b1
137c5049c
1451534d7
153583ce4
hex249bc65

38386789 has 8 divisors (see below), whose sum is σ = 44489088. Its totient is φ = 32439120.

The previous prime is 38386781. The next prime is 38386813. The reversal of 38386789 is 98768383.

It is a happy number.

38386789 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 not a de Polignac number, because 38386789 - 23 = 38386781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38386781) 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, 38122 + ... + 39115.

It is an arithmetic number, because the mean of its divisors is an integer number (5561136).

Almost surely, 238386789 is an apocalyptic number.

It is an amenable number.

38386789 is a deficient number, since it is larger than the sum of its proper divisors (6102299).

38386789 is an equidigital number, since it uses as much as digits as its factorization.

38386789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77315.

The product of its digits is 1741824, while the sum is 52.

The square root of 38386789 is about 6195.7073042551. The cubic root of 38386789 is about 337.3343721380.

The spelling of 38386789 in words is "thirty-eight million, three hundred eighty-six thousand, seven hundred eighty-nine".

Divisors: 1 7 71 497 77237 540659 5483827 38386789