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20012022430 = 25171313792371
BaseRepresentation
bin10010101000110011…
…110011101010011110
31220122200011001220221
4102220303303222132
5311441034204210
613105435031554
71305626245501
oct225063635236
956580131827
1020012022430
11853a2a0714
123a65b9b5ba
131b6c026bba
14d7bb35138
157c1d431da
hex4a8cf3a9e

20012022430 has 64 divisors (see below), whose sum is σ = 38549364480. Its totient is φ = 7453555200.

The previous prime is 20012022421. The next prime is 20012022451. The reversal of 20012022430 is 3422021002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8439145 + ... + 8441515.

It is an arithmetic number, because the mean of its divisors is an integer number (602333820).

Almost surely, 220012022430 is an apocalyptic number.

20012022430 is a deficient number, since it is larger than the sum of its proper divisors (18537342050).

20012022430 is a wasteful number, since it uses less digits than its factorization.

20012022430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20012022430 its reverse (3422021002), we get a palindrome (23434043432).

The spelling of 20012022430 in words is "twenty billion, twelve million, twenty-two thousand, four hundred thirty".

Divisors: 1 2 5 10 17 34 85 131 170 262 379 655 758 1310 1895 2227 2371 3790 4454 4742 6443 11135 11855 12886 22270 23710 32215 40307 49649 64430 80614 99298 201535 248245 310601 403070 496490 621202 844033 898609 1553005 1688066 1797218 3106010 4220165 4493045 5280217 8440330 8986090 10560434 15276353 26401085 30552706 52802170 76381765 117717779 152763530 235435558 588588895 1177177790 2001202243 4002404486 10006011215 20012022430