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8140169 = 173211223
BaseRepresentation
bin11111000011010110001001
3120022120012202
4133003112021
54040441134
6450245545
7126122162
oct37032611
916276182
108140169
11465a914
1228868b5
1318c018b
14111c769
15aabd7e
hex7c3589

8140169 has 8 divisors (see below), whose sum is σ = 8262912. Its totient is φ = 8018640.

The previous prime is 8140163. The next prime is 8140177. The reversal of 8140169 is 9610418.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8140169 is a prime.

It is a super-2 number, since 2×81401692 = 132524702697122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8140163) 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, 36392 + ... + 36614.

It is an arithmetic number, because the mean of its divisors is an integer number (1032864).

Almost surely, 28140169 is an apocalyptic number.

It is an amenable number.

8140169 is a deficient number, since it is larger than the sum of its proper divisors (122743).

8140169 is a wasteful number, since it uses less digits than its factorization.

8140169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 8140169 is about 2853.0981406184. The cubic root of 8140169 is about 201.1613186432.

The spelling of 8140169 in words is "eight million, one hundred forty thousand, one hundred sixty-nine".

Divisors: 1 173 211 223 36503 38579 47053 8140169