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8538145 = 571167331
BaseRepresentation
bin100000100100…
…100000100001
3121001210010121
4200210200201
54141210040
6503000241
7132400360
oct40444041
917053117
108538145
114901920
122a39081
1319cc375
1411c37d7
15b39c4a
hex824821

8538145 has 32 divisors (see below), whose sum is σ = 13003776. Its totient is φ = 5227200.

The previous prime is 8538143. The next prime is 8538149. The reversal of 8538145 is 5418358.

It is not a de Polignac number, because 8538145 - 21 = 8538143 is a prime.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 8538145.

It is not an unprimeable number, because it can be changed into a prime (8538143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25630 + ... + 25960.

It is an arithmetic number, because the mean of its divisors is an integer number (406368).

Almost surely, 28538145 is an apocalyptic number.

It is an amenable number.

8538145 is a deficient number, since it is larger than the sum of its proper divisors (4465631).

8538145 is a wasteful number, since it uses less digits than its factorization.

8538145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its digits is 19200, while the sum is 34.

The square root of 8538145 is about 2922.0104380375. The cubic root of 8538145 is about 204.3875833543.

It can be divided in two parts, 853 and 8145, that added together give a palindrome (8998).

The spelling of 8538145 in words is "eight million, five hundred thirty-eight thousand, one hundred forty-five".

Divisors: 1 5 7 11 35 55 67 77 331 335 385 469 737 1655 2317 2345 3641 3685 5159 11585 18205 22177 25487 25795 110885 127435 155239 243947 776195 1219735 1707629 8538145