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8143045 = 52576337
BaseRepresentation
bin11111000100000011000101
3120022201011021
4133010003011
54041034140
6450311141
7126133441
oct37040305
916281137
108143045
114661a99
1228884b1
1318c1591
14111d821
15aacb4a
hex7c40c5

8143045 has 8 divisors (see below), whose sum is σ = 9811224. Its totient is φ = 6488064.

The previous prime is 8143043. The next prime is 8143097. The reversal of 8143045 is 5403418.

8143045 is digitally balanced in base 3, 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 4 ways, for example, as 2411809 + 5731236 = 1553^2 + 2394^2 .

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 8143045 - 21 = 8143043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8143043) 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, 1884 + ... + 4453.

It is an arithmetic number, because the mean of its divisors is an integer number (1226403).

Almost surely, 28143045 is an apocalyptic number.

It is an amenable number.

8143045 is a deficient number, since it is larger than the sum of its proper divisors (1668179).

8143045 is a wasteful number, since it uses less digits than its factorization.

8143045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6599.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 8143045 is about 2853.6021096151. The cubic root of 8143045 is about 201.1850065965.

The spelling of 8143045 in words is "eight million, one hundred forty-three thousand, forty-five".

Divisors: 1 5 257 1285 6337 31685 1628609 8143045