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8118145 = 57231947
BaseRepresentation
bin11110111101111110000001
3120021110000001
4132331332001
54034240040
6450000001
7126001030
oct36757601
916243001
108118145
114645312
122876001
1318b3149
141114717
15aa559a
hex7bdf81

8118145 has 8 divisors (see below), whose sum is σ = 11133504. Its totient is φ = 5566704.

The previous prime is 8118139. The next prime is 8118157. The reversal of 8118145 is 5418118.

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 8118145 - 23 = 8118137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115939 + ... + 116008.

It is an arithmetic number, because the mean of its divisors is an integer number (1391688).

Almost surely, 28118145 is an apocalyptic number.

It is an amenable number.

8118145 is a deficient number, since it is larger than the sum of its proper divisors (3015359).

8118145 is a wasteful number, since it uses less digits than its factorization.

8118145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231959.

The product of its digits is 1280, while the sum is 28.

The square root of 8118145 is about 2849.2358624726. The cubic root of 8118145 is about 200.9797344320.

The spelling of 8118145 in words is "eight million, one hundred eighteen thousand, one hundred forty-five".

Divisors: 1 5 7 35 231947 1159735 1623629 8118145