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20466105744 = 243760911029
BaseRepresentation
bin10011000011110111…
…111111110110010000
31221211022120220010110
4103003313333312100
5313403310340434
613222455401320
71323112012530
oct230367776620
957738526113
1020466105744
118752646187
123b72083240
131c12123356
14dc21774c0
157ebb3b4e9
hex4c3dffd90

20466105744 has 40 divisors (see below), whose sum is σ = 60423741760. Its totient is φ = 5847458688.

The previous prime is 20466105743. The next prime is 20466105763. The reversal of 20466105744 is 44750166402.

It is a super-2 number, since 2×204661057442 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20466105743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30455179 + ... + 30455850.

It is an arithmetic number, because the mean of its divisors is an integer number (1510593544).

Almost surely, 220466105744 is an apocalyptic number.

20466105744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20466105744 is an abundant number, since it is smaller than the sum of its proper divisors (39957636016).

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

20466105744 is a wasteful number, since it uses less digits than its factorization.

20466105744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60911047 (or 60911041 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 20466105744 in words is "twenty billion, four hundred sixty-six million, one hundred five thousand, seven hundred forty-four".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 336 60911029 121822058 182733087 243644116 365466174 426377203 487288232 730932348 852754406 974576464 1279131609 1461864696 1705508812 2558263218 2923729392 3411017624 5116526436 6822035248 10233052872 20466105744