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8013169 = 11370913
BaseRepresentation
bin11110100100010101110001
3120002010000001
4132210111301
54022410134
6443430001
7125053003
oct36442561
916063001
108013169
11458345a
122825301
131877428
1410c8373
15a84414
hex7a4571

8013169 has 4 divisors (see below), whose sum is σ = 8084196. Its totient is φ = 7942144.

The previous prime is 8013157. The next prime is 8013233. The reversal of 8013169 is 9613108.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1703025 + 6310144 = 1305^2 + 2512^2 .

It is a cyclic number.

It is not a de Polignac number, because 8013169 - 217 = 7882097 is a prime.

It is a super-2 number, since 2×80131692 = 128421754845122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8013119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35344 + ... + 35569.

It is an arithmetic number, because the mean of its divisors is an integer number (2021049).

Almost surely, 28013169 is an apocalyptic number.

It is an amenable number.

8013169 is a deficient number, since it is larger than the sum of its proper divisors (71027).

8013169 is a wasteful number, since it uses less digits than its factorization.

8013169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71026.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 8013169 is about 2830.7541398009. The cubic root of 8013169 is about 200.1096815055.

It can be divided in two parts, 80131 and 69, that added together give a triangular number (80200 = T400).

The spelling of 8013169 in words is "eight million, thirteen thousand, one hundred sixty-nine".

Divisors: 1 113 70913 8013169