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8628145 = 56128289
BaseRepresentation
bin100000111010…
…011110110001
3121020100120221
4200322132301
54202100040
6504533041
7133223641
oct40723661
917210527
108628145
1149634a9
122a81181
131a31316
141208521
15b5674a
hex83a7b1

8628145 has 8 divisors (see below), whose sum is σ = 10523880. Its totient is φ = 6789120.

The previous prime is 8628131. The next prime is 8628149. The reversal of 8628145 is 5418268.

8628145 = T211 + T212 + ... + T393.

8628145 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 720801 + 7907344 = 849^2 + 2812^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8628145 - 27 = 8628017 is a prime.

It is a super-2 number, since 2×86281452 = 148889772282050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8628145.

It is not an unprimeable number, because it can be changed into a prime (8628149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13840 + ... + 14449.

It is an arithmetic number, because the mean of its divisors is an integer number (1315485).

Almost surely, 28628145 is an apocalyptic number.

It is an amenable number.

8628145 is a deficient number, since it is larger than the sum of its proper divisors (1895735).

8628145 is a wasteful number, since it uses less digits than its factorization.

8628145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28355.

The product of its digits is 15360, while the sum is 34.

The square root of 8628145 is about 2937.3704226740. The cubic root of 8628145 is about 205.1032198809.

The spelling of 8628145 in words is "eight million, six hundred twenty-eight thousand, one hundred forty-five".

Divisors: 1 5 61 305 28289 141445 1725629 8628145