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26413487868 = 22319235036897
BaseRepresentation
bin11000100110010111…
…011101011011111100
32112011210122012122110
4120212113131123330
5413043323102433
620044552414020
71623356641155
oct304627353374
975153565573
1026413487868
11102247a8419
1251519a7310
13264c328281
1413c7daa92c
15a48d2d963
hex6265dd6fc

26413487868 has 48 divisors (see below), whose sum is σ = 67695909120. Its totient is φ = 7978443264.

The previous prime is 26413487861. The next prime is 26413487869. The reversal of 26413487868 is 86878431462.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26413487861) 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, 2513205 + ... + 2523692.

It is an arithmetic number, because the mean of its divisors is an integer number (1410331440).

Almost surely, 226413487868 is an apocalyptic number.

It is an amenable number.

26413487868 is an abundant number, since it is smaller than the sum of its proper divisors (41282421252).

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

26413487868 is a wasteful number, since it uses less digits than its factorization.

26413487868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036946 (or 5036944 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 57.

The spelling of 26413487868 in words is "twenty-six billion, four hundred thirteen million, four hundred eighty-seven thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 19 23 38 46 57 69 76 92 114 138 228 276 437 874 1311 1748 2622 5244 5036897 10073794 15110691 20147588 30221382 60442764 95701043 115848631 191402086 231697262 287103129 347545893 382804172 463394524 574206258 695091786 1148412516 1390183572 2201123989 4402247978 6603371967 8804495956 13206743934 26413487868