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29008806894 = 232291312831499
BaseRepresentation
bin11011000001000011…
…110100001111101110
32202212200012002001100
4123001003310033232
5433402223310034
621154303223530
72044602535014
oct330103641756
982780162040
1029008806894
1111336795a81
125756ba7ba6
132973c1c6c2
1415929508b4
15b4bad7099
hex6c10f43ee

29008806894 has 96 divisors (see below), whose sum is σ = 65791440000. Its totient is φ = 9226002240.

The previous prime is 29008806881. The next prime is 29008806899. The reversal of 29008806894 is 49860880092.

It is a self number, because there is not a number n which added to its sum of digits gives 29008806894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29008806899) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19351357 + ... + 19352855.

It is an arithmetic number, because the mean of its divisors is an integer number (685327500).

Almost surely, 229008806894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29008806894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32895720000).

29008806894 is an abundant number, since it is smaller than the sum of its proper divisors (36782633106).

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

29008806894 is a wasteful number, since it uses less digits than its factorization.

29008806894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 29008806894 in words is "twenty-nine billion, eight million, eight hundred six thousand, eight hundred ninety-four".

Divisors: 1 2 3 6 9 18 29 58 87 131 174 261 262 283 393 522 566 786 849 1179 1499 1698 2358 2547 2998 3799 4497 5094 7598 8207 8994 11397 13491 16414 22794 24621 26982 34191 37073 43471 49242 68382 73863 74146 86942 111219 130413 147726 196369 222438 260826 333657 391239 392738 424217 589107 667314 782478 848434 1075117 1178214 1272651 1767321 2150234 2545302 3225351 3534642 3817953 5694701 6450702 7635906 9676053 11389402 12302293 17084103 19352106 24604586 34168206 36906879 51252309 55572427 73813758 102504618 110720637 111144854 166717281 221441274 333434562 500151843 1000303686 1611600383 3223200766 4834801149 9669602298 14504403447 29008806894