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69399030 = 2352979769
BaseRepresentation
bin1000010001011…
…11000111110110
311211120211120110
410020233013312
5120231232110
610515243450
71501611351
oct410570766
9154524513
1069399030
11361a0578
121b2a9586
13114bb11c
149307298
15615ca20
hex422f1f6

69399030 has 32 divisors (see below), whose sum is σ = 172303200. Its totient is φ = 17868032.

The previous prime is 69399017. The next prime is 69399037. The reversal of 69399030 is 3099396.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 69399030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69399037) 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, 39015 + ... + 40754.

It is an arithmetic number, because the mean of its divisors is an integer number (5384475).

Almost surely, 269399030 is an apocalyptic number.

69399030 is an abundant number, since it is smaller than the sum of its proper divisors (102904170).

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

69399030 is a wasteful number, since it uses less digits than its factorization.

69399030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79808.

The product of its (nonzero) digits is 39366, while the sum is 39.

The square root of 69399030 is about 8330.6080210270. The cubic root of 69399030 is about 410.9457248615.

The spelling of 69399030 in words is "sixty-nine million, three hundred ninety-nine thousand, thirty".

Divisors: 1 2 3 5 6 10 15 29 30 58 87 145 174 290 435 870 79769 159538 239307 398845 478614 797690 1196535 2313301 2393070 4626602 6939903 11566505 13879806 23133010 34699515 69399030