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168071469 = 31726912251
BaseRepresentation
bin10100000010010…
…01000100101101
3102201020220201020
422001021010231
5321011241334
624402204353
74110404166
oct1201110455
9381226636
10168071469
1186965645
12483536b9
1328a88597
141847076d
15eb4de49
hexa04912d

168071469 has 16 divisors (see below), whose sum is σ = 238178880. Its totient is φ = 105056000.

The previous prime is 168071461. The next prime is 168071479. The reversal of 168071469 is 964170861.

It is a cyclic number.

It is not a de Polignac number, because 168071469 - 23 = 168071461 is a prime.

It is a super-2 number, since 2×1680714692 = 56496037383635922, 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 168071469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168071461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7594 + ... + 19844.

It is an arithmetic number, because the mean of its divisors is an integer number (14886180).

Almost surely, 2168071469 is an apocalyptic number.

It is an amenable number.

168071469 is a deficient number, since it is larger than the sum of its proper divisors (70107411).

168071469 is a wasteful number, since it uses less digits than its factorization.

168071469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12540.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 168071469 is about 12964.2380801958. The cubic root of 168071469 is about 551.8630692437.

The spelling of 168071469 in words is "one hundred sixty-eight million, seventy-one thousand, four hundred sixty-nine".

Divisors: 1 3 17 51 269 807 4573 12251 13719 36753 208267 624801 3295519 9886557 56023823 168071469