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26423012620 = 2251777714743
BaseRepresentation
bin11000100110111011…
…110010110100001100
32112012110120010011001
4120212323302310030
5413103242400440
620045532510044
71623533621134
oct304673626414
975173503131
1026423012620
111022a113514
12515501b324
1326512b1714
1413c9369ac4
15a49ab0b9a
hex626ef2d0c

26423012620 has 24 divisors (see below), whose sum is σ = 58752346464. Its totient is φ = 9947486976.

The previous prime is 26423012617. The next prime is 26423012639. The reversal of 26423012620 is 2621032462.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38857032 + ... + 38857711.

It is an arithmetic number, because the mean of its divisors is an integer number (2448014436).

Almost surely, 226423012620 is an apocalyptic number.

26423012620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26423012620 is an abundant number, since it is smaller than the sum of its proper divisors (32329333844).

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

26423012620 is a wasteful number, since it uses less digits than its factorization.

26423012620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77714769 (or 77714767 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 26423012620 in words is "twenty-six billion, four hundred twenty-three million, twelve thousand, six hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 77714743 155429486 310858972 388573715 777147430 1321150631 1554294860 2642301262 5284602524 6605753155 13211506310 26423012620