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169340868 = 223658073
BaseRepresentation
bin10100001011111…
…10111111000100
3102210122102000000
422011332333010
5321322401433
624445321300
74124242104
oct1205767704
9383572000
10169340868
1187652334
1248866230
13291112c8
14186c1204
15ed00113
hexa17efc4

169340868 has 42 divisors (see below), whose sum is σ = 444324174. Its totient is φ = 56445984.

The previous prime is 169340867. The next prime is 169340869. The reversal of 169340868 is 868043961.

It is an interprime number because it is at equal distance from previous prime (169340867) and next prime (169340869).

It can be written as a sum of positive squares in only one way, i.e., 101969604 + 67371264 = 10098^2 + 8208^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (169340867) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 26121 + ... + 31952.

It is an arithmetic number, because the mean of its divisors is an integer number (10579147).

Almost surely, 2169340868 is an apocalyptic number.

169340868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

169340868 is an abundant number, since it is smaller than the sum of its proper divisors (274983306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169340868 is an equidigital number, since it uses as much as digits as its factorization.

169340868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58095 (or 58078 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 169340868 is about 13013.1037035751. The cubic root of 169340868 is about 553.2489442440.

The spelling of 169340868 in words is "one hundred sixty-nine million, three hundred forty thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 243 324 486 729 972 1458 2916 58073 116146 174219 232292 348438 522657 696876 1045314 1567971 2090628 3135942 4703913 6271884 9407826 14111739 18815652 28223478 42335217 56446956 84670434 169340868