Search a number
-
+
38756893 = 72790957
BaseRepresentation
bin1001001111011…
…0001000011101
32200221001110111
42103312020131
534410210033
63502410021
7650266600
oct223661035
980831414
1038756893
111a97169a
1210b90911
13804ca96
14520c337
1536087cd
hex24f621d

38756893 has 6 divisors (see below), whose sum is σ = 45084606. Its totient is φ = 33220152.

The previous prime is 38756891. The next prime is 38756911. The reversal of 38756893 is 39865783.

38756893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 21930489 + 16826404 = 4683^2 + 4102^2 .

It is not a de Polignac number, because 38756893 - 21 = 38756891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 790957 = 38756893 / (3 + 8 + 7 + 5 + 6 + 8 + 9 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38756891) 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 5 ways as a sum of consecutive naturals, for example, 395430 + ... + 395527.

It is an arithmetic number, because the mean of its divisors is an integer number (7514101).

Almost surely, 238756893 is an apocalyptic number.

It is an amenable number.

38756893 is a deficient number, since it is larger than the sum of its proper divisors (6327713).

38756893 is an equidigital number, since it uses as much as digits as its factorization.

38756893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790971 (or 790964 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 38756893 is about 6225.5034334582. The cubic root of 38756893 is about 338.4150364183.

The spelling of 38756893 in words is "thirty-eight million, seven hundred fifty-six thousand, eight hundred ninety-three".

Divisors: 1 7 49 790957 5536699 38756893