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69180140 = 225171910709
BaseRepresentation
bin1000001111110…
…01101011101100
311211011201022102
410013321223230
5120202231030
610510434232
71500010241
oct407715354
9154151272
1069180140
1136061077
121b202978
13114425c3
14928b5c8
156117c45
hex41f9aec

69180140 has 48 divisors (see below), whose sum is σ = 161935200. Its totient is φ = 24671232.

The previous prime is 69180103. The next prime is 69180151. The reversal of 69180140 is 4108196.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1106 + ... + 11814.

It is an arithmetic number, because the mean of its divisors is an integer number (3373650).

Almost surely, 269180140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69180140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80967600).

69180140 is an abundant number, since it is smaller than the sum of its proper divisors (92755060).

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

69180140 is a wasteful number, since it uses less digits than its factorization.

69180140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10754 (or 10752 counting only the distinct ones).

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

The square root of 69180140 is about 8317.4599488065. The cubic root of 69180140 is about 410.5132181076.

The spelling of 69180140 in words is "sixty-nine million, one hundred eighty thousand, one hundred forty".

Divisors: 1 2 4 5 10 17 19 20 34 38 68 76 85 95 170 190 323 340 380 646 1292 1615 3230 6460 10709 21418 42836 53545 107090 182053 203471 214180 364106 406942 728212 813884 910265 1017355 1820530 2034710 3459007 3641060 4069420 6918014 13836028 17295035 34590070 69180140