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34868139 = 3172131307
BaseRepresentation
bin1000010100000…
…0101110101011
32102121111002120
42011000232223
532411240024
63243202323
7602242245
oct205005653
972544076
1034868139
1118755a49
12b8163a3
1372baa47
1448b9095
1530db479
hex2140bab

34868139 has 24 divisors (see below), whose sum is σ = 49925568. Its totient is φ = 21640320.

The previous prime is 34868137. The next prime is 34868143. The reversal of 34868139 is 93186843.

It is a happy number.

It is not a de Polignac number, because 34868139 - 21 = 34868137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 34868139.

It is not an unprimeable number, because it can be changed into a prime (34868131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113424 + ... + 113730.

It is an arithmetic number, because the mean of its divisors is an integer number (2080232).

Almost surely, 234868139 is an apocalyptic number.

34868139 is a deficient number, since it is larger than the sum of its proper divisors (15057429).

34868139 is a wasteful number, since it uses less digits than its factorization.

34868139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 458 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 34868139 is about 5904.9249783549. The cubic root of 34868139 is about 326.6953273248.

The spelling of 34868139 in words is "thirty-four million, eight hundred sixty-eight thousand, one hundred thirty-nine".

Divisors: 1 3 17 51 131 289 307 393 867 921 2227 5219 6681 15657 37859 40217 88723 113577 120651 266169 683689 2051067 11622713 34868139